Medical School · Year 3 · Psychiatry · includes a quiz and discussion video

Seminar 13: Child and Adolescent Psychiatry

Psychiatry Clerkship

Learning Objectives

By the end of this seminar, students will be able to:

1. Apply a developmental framework to psychiatric assessment across childhood and adolescence
2. Diagnose attention-deficit/hyperactivity disorder using DSM-5 criteria and select appropriate pharmacological and behavioral treatments
3. Identify the core diagnostic features of autism spectrum disorder and describe evidence-based interventions including applied behavior analysis
4. Recognize the unique clinical presentations of anxiety and depressive disorders in pediatric populations
5. Differentiate oppositional defiant disorder from conduct disorder and outline corresponding management strategies
6. Navigate special issues in child psychiatry including medication considerations, school-based services, child abuse recognition, and trauma-informed care

Seminar Outline

Section 1: Developmental Considerations in Child Psychiatry

Child and adolescent psychiatry requires a thorough understanding of normal developmental milestones as a foundation for recognizing psychopathology. During infancy, clinicians must assess the quality of attachment between caregiver and child as well as innate temperament, which forms the earliest substrate for emotional regulation. The preschool years are characterized by the emergence of play-based learning, the capacity for separation from caregivers, and initial socialization with peers. School-age children face the developmental tasks of academic achievement, peer relationship formation, and the consolidation of self-esteem, while adolescents grapple with identity formation, growing autonomy from family, and the neurodevelopmentally driven increase in risk-taking behavior.

Assessment principles in pediatric psychiatry differ substantially from adult practice. The use of multiple informants is essential, as children may present differently across settings, and parents, teachers, and the child or adolescent themselves each contribute unique perspectives on functioning. Clinicians must interpret behavior within the context of developmental norms, recognizing that what constitutes pathology at one age may represent typical behavior at another. For younger children, play-based assessment techniques provide a developmentally appropriate medium through which emotional and behavioral concerns can be explored. Confidentiality is handled with particular nuance in adolescent populations, where partial confidentiality supports the therapeutic alliance while maintaining safety, and cultural context must always be considered in the interpretation of behavior and family dynamics.

Across the developmental spectrum, certain presentations should raise concern for psychiatric evaluation. In infancy, signs such as poor attachment behavior and persistent feeding difficulties warrant further assessment. Toddlers who demonstrate language delay or absence of joint attention may be showing early signs of neurodevelopmental disorders. During the preschool years, the absence of imaginary play or the presence of severe, prolonged tantrums that are disproportionate to context should prompt evaluation. School-age children who exhibit academic failure or marked social isolation, and adolescents who engage in substance use, self-harm, or profound withdrawal from peers and activities, represent populations in need of comprehensive psychiatric assessment.

The family and school systems are central to both the assessment and treatment of child and adolescent psychiatric conditions. Family dynamics, parenting styles, and the presence of parental psychopathology all influence the child's mental health and must be thoroughly evaluated. Schools serve as critical informants regarding academic functioning and classroom behavior, and school-based observations and reports often provide data that cannot be obtained in a clinical setting. Peer relationships offer an important window into social development and functioning. Community resources and stressors, including poverty, neighborhood violence, and access to mental health services, round out the biopsychosocial formulation necessary for comprehensive care planning.

<image>Panel A: Developmental milestones across infancy, preschool, school age, and adolescence with corresponding psychiatric assessment considerations at each stage. Panel B: Multi-informant assessment model showing parent, teacher, and child report convergence for comprehensive diagnostic evaluation. Panel C: Red flag behaviors organized by age group from infancy through adolescence indicating need for psychiatric referral. Panel D: Systems diagram illustrating the interrelationship of family, school, peer, and community factors in child psychiatric assessment.</image>

Section 2: Attention-Deficit/Hyperactivity Disorder Diagnosis

Attention-deficit/hyperactivity disorder represents one of the most common neurodevelopmental conditions encountered in child and adolescent psychiatry, with prevalence estimates ranging from five to ten percent of school-age children. The DSM-5 diagnostic criteria require the presence of at least six symptoms of inattention and/or at least six symptoms of hyperactivity-impulsivity persisting for a minimum of six months, with a reduced threshold of five symptoms applied to individuals aged seventeen years and older. Several of the qualifying symptoms must have been present prior to age twelve, and the symptoms must be demonstrable in two or more settings such as home, school, and social environments. The clinician must establish that the symptoms produce clear functional impairment and are not better explained by another mental disorder such as anxiety, mood disorder, or psychotic illness.

The DSM-5 recognizes three clinical presentations of ADHD based on the predominant symptom pattern. The predominantly inattentive presentation is characterized by greater impairment in sustaining attention, organizing tasks, and following through on instructions, and is more commonly seen in females and may be underdiagnosed due to the absence of disruptive behavior. The predominantly hyperactive-impulsive presentation features motor restlessness, difficulty remaining seated, excessive talking, and impulsive responding, and is more commonly identified in younger children. The combined presentation, in which criteria are met for both inattention and hyperactivity-impulsivity, represents the most frequently diagnosed subtype and is associated with the broadest range of functional impairment.

The clinical features of inattention include making careless mistakes in schoolwork, difficulty sustaining attention during tasks or play, appearing not to listen when spoken to directly, failing to follow through on instructions, difficulty organizing tasks and activities, avoidance of tasks requiring sustained mental effort, frequently losing items necessary for tasks, easy distractibility by extraneous stimuli, and forgetfulness in daily activities. Hyperactive-impulsive symptoms encompass fidgeting or squirming when seated, leaving one's seat in situations where remaining seated is expected, running or climbing in inappropriate situations, inability to play or engage in leisure activities quietly, acting as if driven by a motor, talking excessively, blurting out answers before questions are completed, difficulty waiting one's turn, and interrupting or intruding on others.

Comprehensive ADHD assessment includes a thorough developmental, academic, and behavioral history obtained from both parents and the patient. Standardized rating scales such as the Vanderbilt Assessment Scales, Conners Rating Scales, or SNAP-IV should be completed by both parents and teachers to capture symptom severity across settings. The evaluation must include screening for conditions that can mimic or coexist with ADHD, including vision and hearing deficits, learning disorders, thyroid dysfunction, sleep disturbances, and substance use in adolescents. A complete medical history and physical examination help identify medical contributors and establish a baseline for monitoring treatment effects, particularly growth parameters, blood pressure, and heart rate.

<image>Panel A: DSM-5 diagnostic criteria for ADHD with symptom counts, onset, settings, impairment, and exclusionary requirements displayed in a flowchart. Panel B: Comparison of the three ADHD presentations showing characteristic symptom clusters for inattentive, hyperactive-impulsive, and combined types. Panel C: Detailed listing of the nine inattention symptoms alongside the nine hyperactivity-impulsivity symptoms as described in DSM-5. Panel D: Comprehensive ADHD assessment algorithm including history, rating scales, multi-informant data, and differential diagnosis workup.</image>

Section 3: ADHD Treatment

Stimulant medications represent the first-line pharmacological treatment for ADHD and are the most extensively studied and effective pharmacotherapy for the condition. The two primary stimulant classes are methylphenidate-based preparations, including brand names such as Ritalin, Concerta, and Focalin, and amphetamine-based preparations such as Adderall and Vyvanse. Both classes are available in short-acting formulations lasting approximately four hours and long-acting formulations providing coverage for eight to twelve hours, with the choice depending on the duration of symptom coverage required. Common side effects include appetite suppression, insomnia when dosed too late in the day, and potential effects on linear growth velocity, which necessitate regular monitoring of height and weight.

Non-stimulant medications serve as alternatives when stimulants are contraindicated, not tolerated, or produce inadequate response. Atomoxetine is a selective norepinephrine reuptake inhibitor that provides continuous coverage without abuse potential, though it requires several weeks to reach full efficacy. Extended-release guanfacine and clonidine are alpha-2 adrenergic agonists that can be used as monotherapy or adjunctively with stimulants, and are particularly useful when tics, aggression, or sleep difficulties coexist with ADHD. Viloxazine, a more recently approved serotonin-norepinephrine reuptake inhibitor, expands the non-stimulant options and has demonstrated efficacy in pediatric clinical trials.

Behavioral interventions play a critical role in the multimodal treatment of ADHD, particularly for preschool-age children where they constitute the recommended first-line treatment. Parent training in behavioral management equips caregivers with strategies for establishing structure, providing consistent consequences, and reinforcing desired behaviors. Classroom accommodations through Section 504 plans or Individualized Education Programs provide environmental modifications such as preferential seating, extended time on tests, and organizational support. Organizational skills training is beneficial for older children and adolescents, while social skills group training addresses the interpersonal difficulties that commonly accompany ADHD. Evidence from the landmark Multimodal Treatment Study of ADHD demonstrates that combination treatment with medication and behavioral intervention produces the most comprehensive outcomes.

Ongoing monitoring is essential for optimizing ADHD treatment and ensuring safety. Height and weight should be measured at every visit and plotted on growth charts, as stimulant medications may attenuate growth velocity. Blood pressure and pulse require documentation at each appointment, given the sympathomimetic effects of stimulants and the cardiovascular effects of alpha-2 agonists. Symptom monitoring using standardized rating scales provides objective data on treatment response and guides dose adjustments. Side effects must be systematically assessed at each encounter, and the potential utility of medication holidays during school breaks should be discussed with families to allow for growth recovery and to reassess the ongoing need for pharmacotherapy.

<image>Panel A: Stimulant medication classes showing methylphenidate and amphetamine preparations with short-acting and long-acting formulations and their durations of action. Panel B: Non-stimulant medication options including atomoxetine, guanfacine XR, clonidine XR, and viloxazine with mechanisms, onset, and indications. Panel C: Behavioral intervention hierarchy including parent training, classroom accommodations, organizational skills training, and social skills groups. Panel D: Monitoring protocol for ADHD treatment showing parameters, frequency, and clinical actions for growth, cardiovascular, symptom, and side-effect tracking.</image>

Section 4: Autism Spectrum Disorder

Autism spectrum disorder is a neurodevelopmental condition defined by the DSM-5 through two core domains of impairment. Criterion A requires persistent deficits in social communication and social interaction across multiple contexts, manifested by deficiencies in social-emotional reciprocity, nonverbal communicative behaviors, and the development and maintenance of relationships. Criterion B requires the presence of at least two of four types of restricted, repetitive patterns of behavior, interests, or activities. Symptoms must be present in the early developmental period, though they may not become fully apparent until social demands exceed the individual's capacity. The condition must cause clinically significant impairment in functioning and cannot be better explained by intellectual disability alone, though the two conditions frequently co-occur.

Deficits in social communication represent the hallmark of autism spectrum disorder and manifest across three key areas. Impairments in social-emotional reciprocity range from abnormal social approach and failure to engage in typical back-and-forth conversation to reduced sharing of interests and emotions and failure to initiate or respond to social interactions. Nonverbal communicative deficits include poorly integrated verbal and nonverbal communication, abnormalities in eye contact and body language, deficits in understanding and use of gestures, and a total lack of facial expression or nonverbal communication. Difficulties in developing, maintaining, and understanding relationships manifest as difficulty adjusting behavior to suit various social contexts, difficulty sharing imaginative play or making friends, and absence of interest in peers.

Restricted and repetitive behaviors in ASD encompass four categories, of which at least two must be present for diagnosis. Stereotyped or repetitive motor movements, use of objects, or speech include behaviors such as motor mannerisms like hand flapping, lining up toys, echolalia, and idiosyncratic phrasing. Insistence on sameness, inflexible adherence to routines, or ritualized patterns of verbal or nonverbal behavior manifest as extreme distress at small changes, rigid thinking patterns, and greeting rituals. Highly restricted, fixated interests that are abnormal in intensity or focus may involve strong attachment to unusual objects or excessively circumscribed preoccupations. Hyper- or hypo-reactivity to sensory input or unusual interest in sensory aspects of the environment includes adverse responses to specific sounds or textures, excessive smelling or touching of objects, and visual fascination with lights or movement.

The DSM-5 employs a severity rating system for autism spectrum disorder that specifies the level of support required across both diagnostic domains. Level 1, designated as requiring support, describes individuals who demonstrate noticeable impairments in social communication without supports in place and who show inflexibility of behavior that causes significant interference with functioning in one or more contexts. Level 2, requiring substantial support, characterizes individuals with marked deficits in verbal and nonverbal social communication whose social impairments are apparent even with supports, and who demonstrate restricted and repetitive behaviors that are obvious to casual observers. Level 3, requiring very substantial support, applies to individuals with severe deficits in social communication that cause severe impairments in functioning, very limited initiation of social interactions, and restricted and repetitive behaviors that markedly interfere with functioning across all domains.

<image>Panel A: DSM-5 diagnostic criteria for autism spectrum disorder showing the two-domain structure with Criterion A social communication deficits and Criterion B restricted repetitive behaviors. Panel B: Three areas of social communication deficit with clinical examples of impaired reciprocity, nonverbal communication, and relationship development. Panel C: Four categories of restricted and repetitive behaviors with representative examples for stereotypy, sameness, restricted interests, and sensory reactivity. Panel D: ASD severity levels 1 through 3 with descriptions of social communication and restricted behavior profiles at each support level.</image>

Section 5: ASD Assessment and Treatment

Early identification of autism spectrum disorder is critical because earlier intervention is associated with better developmental outcomes. Between six and twelve months of age, reduced eye contact, limited social smiling, and decreased responsiveness to name may represent early warning signs. By twelve to eighteen months, the absence of babbling, pointing, and communicative gestures raises significant concern. Between eighteen and twenty-four months, the absence of single words and pretend play warrants evaluation, and by twenty-four months, the failure to produce two-word phrases or the loss of previously acquired language or social skills constitutes a regression that should trigger urgent referral for comprehensive assessment.

Screening and diagnostic tools for ASD involve both population-level screening instruments and comprehensive diagnostic assessments. The Modified Checklist for Autism in Toddlers (M-CHAT) is recommended for universal screening at the eighteen-month and twenty-four-month well-child visits and serves as an efficient first-line tool. The Autism Diagnostic Observation Schedule, Second Edition (ADOS-2) is a semi-structured observational assessment considered the gold standard for diagnostic evaluation and involves standardized social interaction activities calibrated to the individual's developmental level. The Autism Diagnostic Interview-Revised (ADI-R) is a structured parent interview that provides detailed developmental history. A comprehensive multidisciplinary evaluation typically involves developmental pediatrics, psychology, speech-language pathology, and occupational therapy to characterize the full profile of strengths and challenges.

Treatment of autism spectrum disorder is multimodal and aims to improve communication, social skills, adaptive behavior, and quality of life. Applied Behavior Analysis represents the intervention with the strongest evidence base and uses principles of learning theory to build functional skills and reduce maladaptive behaviors through structured, intensive programming. Speech and language therapy targets communication skills ranging from basic verbal expression to pragmatic language and conversational abilities. Occupational therapy addresses sensory processing differences, fine motor skills, and adaptive daily living skills. Social skills training programs provide structured opportunities for learning and practicing peer interaction, and special education services through Individualized Education Programs ensure appropriate educational supports and accommodations.

Pharmacological treatment in ASD targets associated symptoms rather than core deficits, as no medication has demonstrated efficacy for the core social communication or restricted behavior features. Risperidone and aripiprazole are the only medications with FDA approval for the management of irritability associated with ASD in children, and both carry significant metabolic side effects requiring ongoing monitoring. Stimulant medications and alpha-2 agonists may be used to manage coexisting hyperactivity and impulsivity, though children with ASD may be more sensitive to side effects. Selective serotonin reuptake inhibitors can address comorbid anxiety, and melatonin is commonly used for the sleep disturbances that affect the majority of children with ASD. Families should be counseled that early, intensive behavioral intervention offers the greatest potential for improving core symptoms and long-term outcomes.

<image>Panel A: Developmental timeline of early ASD warning signs from six months through twenty-four months with key behavioral markers at each age. Panel B: Screening and diagnostic tools including M-CHAT, ADOS-2, ADI-R, and multidisciplinary evaluation components with their respective roles. Panel C: Multimodal ASD treatment model showing ABA, speech therapy, occupational therapy, social skills training, and special education services. Panel D: Pharmacological targets in ASD with FDA-approved and off-label medications organized by target symptom including irritability, hyperactivity, anxiety, and sleep.</image>

Section 6: Childhood Anxiety Disorders

Anxiety disorders represent the most common category of psychiatric illness in children and adolescents, with several distinct presentations that are particularly relevant to the pediatric population. Separation anxiety disorder is characterized by developmentally inappropriate and excessive fear or anxiety concerning separation from attachment figures, and commonly manifests as school refusal, somatic complaints, and persistent worry about harm befalling caregivers. Generalized anxiety disorder presents as excessive, difficult-to-control worry about multiple domains including academic performance, social acceptance, and family safety. Social anxiety disorder involves marked fear or anxiety about social or performance situations in which the child may be exposed to scrutiny. Selective mutism, a condition in which the child consistently fails to speak in specific social situations despite speaking freely in others, is now understood as a variant of social anxiety rather than an oppositional behavior.

Separation anxiety disorder warrants particular attention due to its prevalence in younger children and its frequent presentation as school refusal. The DSM-5 requires a duration of at least four weeks in children, during which the child exhibits excessive distress when separation occurs or is anticipated, persistent worry about losing attachment figures or about possible harm befalling them, reluctance or refusal to go out due to fear of separation, and disturbance in sleep related to separation themes. The anxiety must be developmentally inappropriate for the child's age, as some degree of separation anxiety is normal in toddlers and young preschool-age children. School refusal is one of the most functionally impairing manifestations, and prolonged absence from school typically leads to worsening anxiety, academic decline, and social isolation.

Treatment of childhood anxiety disorders follows a stepped-care approach with cognitive behavioral therapy as the established first-line intervention. CBT for childhood anxiety employs exposure-based techniques in which the child gradually confronts feared situations within a therapeutic framework, developing mastery and coping skills. Parent training is an integral component, teaching caregivers to manage their own anxiety responses, avoid accommodating avoidant behaviors, and reinforce the child's brave approach to feared situations. For school refusal, treatment prioritizes a rapid and graduated return to school with appropriate supports, as prolonged absence strongly predicts poorer outcomes. Selective serotonin reuptake inhibitors are indicated when anxiety is severe, when CBT alone produces an insufficient response, or when access to evidence-based therapy is limited, and combination treatment with CBT and SSRIs has demonstrated the strongest outcomes in large clinical trials.

School refusal requires careful diagnostic differentiation because anxiety-based school refusal and truancy represent fundamentally different clinical entities with distinct etiologies and treatment approaches. Anxiety-based school refusal is characterized by emotional distress about attending school, a desire to remain with caregivers, and parents who are aware of the child's absence, whereas truancy involves willful avoidance of school without significant anxiety, often accompanied by conduct problems and concealment from parents. Accurate assessment of the underlying cause directs appropriate intervention. Treatment of anxiety-based school refusal requires close collaboration among the clinician, family, and school personnel, with a coordinated plan for gradual reintegration that includes designated safe adults at school, modified schedules as needed during the transition, and clear communication pathways to address emerging challenges promptly.

<image>Panel A: Classification of childhood anxiety disorders including separation anxiety, generalized anxiety, social anxiety, specific phobia, and selective mutism with distinguishing features. Panel B: DSM-5 diagnostic criteria for separation anxiety disorder including symptom domains, duration, and developmental appropriateness considerations. Panel C: Treatment algorithm for childhood anxiety showing CBT as first-line, adjunctive parent training, SSRI indications, and combination treatment for moderate to severe presentations. Panel D: Differential diagnosis of school refusal contrasting anxiety-based refusal with truancy across key clinical features and management approaches.</image>

Section 7: Depression in Children and Adolescents

Depression in pediatric populations presents with important differences from the adult phenotype that clinicians must recognize to avoid diagnostic delay. In children, the predominant mood disturbance may manifest as irritability rather than sadness, and somatic complaints such as headaches and abdominal pain are frequent presenting symptoms that may lead families to seek medical rather than psychiatric evaluation. School problems including declining grades, behavioral disruptions, and social withdrawal may be the most visible indicators of underlying depressive illness. Adolescents present more similarly to adults with persistent low mood, anhedonia, and neurovegetative symptoms, though irritability remains a common feature and may be more prominent than overt sadness. Both age groups may not spontaneously report depressed mood, underscoring the importance of direct, empathic questioning.

Several key differences between pediatric and adult depression inform clinical assessment and management. The DSM-5 allows irritable mood as a substitute for depressed mood in children and adolescents, reflecting the different affective expression of depression across developmental stages. Somatic complaints including headaches, stomachaches, and nonspecific pain occur with greater frequency in younger patients and may be the primary reason for presentation. Behavioral manifestations such as school refusal, aggression, and oppositional behavior may overshadow mood symptoms and lead to misdiagnosis as a disruptive behavior disorder. The minimum duration criterion of two weeks is consistent with adults, and the course of pediatric depression is characterized by significant risk of recurrence, with approximately seventy percent of youth experiencing a subsequent depressive episode within five years.

Suicide risk assessment is a critical component of evaluating depression in children and adolescents, as suicide is the second leading cause of death in the ten-to-twenty-four age group. Risk increases substantially during adolescence, and warning signs include social withdrawal, giving away valued possessions, and making direct or indirect statements about wanting to die or being a burden. LGBTQ+ youth face disproportionately elevated risk, with suicide attempt rates three to four times higher than heterosexual and cisgender peers. Direct questioning about suicidal ideation, plans, and access to means is essential and does not increase risk. Every evaluation of a depressed child or adolescent should include a safety assessment and, when indicated, the development of a collaborative safety plan involving the patient and family.

Treatment of pediatric depression utilizes psychotherapy, pharmacotherapy, or their combination depending on severity. Cognitive behavioral therapy is the first-line treatment for mild to moderate depression, targeting the negative cognitive triad, behavioral withdrawal, and deficits in problem-solving and coping skills. Interpersonal therapy for adolescents is an evidence-based alternative that focuses on the interpersonal context of depression including role disputes, role transitions, grief, and interpersonal deficits. Fluoxetine holds FDA approval for the treatment of depression in children aged eight and older and represents the first-line pharmacological option when medication is warranted. All antidepressants carry a black box warning regarding the potential for increased suicidal ideation and behavior in children and adolescents during the early weeks of treatment, necessitating close clinical monitoring during initiation and dose adjustments. For moderate to severe depression, combination treatment with CBT and medication produces the best outcomes as demonstrated in the Treatment of Adolescents with Depression Study.

<image>Panel A: Age-specific depression presentations contrasting childhood features of irritability, somatic complaints, and school problems with adolescent features more closely resembling adult depression. Panel B: Key clinical differences between pediatric and adult depression including mood expression, somatic emphasis, behavioral manifestations, and recurrence rates. Panel C: Suicide risk assessment framework for youth including warning signs, high-risk populations, direct assessment questions, and safety planning components. Panel D: Treatment algorithm for pediatric depression showing CBT and IPT-A as first-line psychotherapies, fluoxetine as first-line medication, black box monitoring requirements, and combination treatment for moderate to severe cases.</image>

Section 8: Disruptive Behavior Disorders

Oppositional defiant disorder is characterized by a pattern of angry and irritable mood, argumentative and defiant behavior, and vindictiveness that persists for at least six months. The angry and irritable mood domain includes frequently losing one's temper, being easily annoyed or touchy, and being angry and resentful. The argumentative and defiant behavior domain encompasses actively arguing with authority figures, deliberately refusing to comply with rules and requests, deliberately annoying others, and blaming others for mistakes or misbehavior. Vindictiveness, defined as being spiteful or vindictive at least twice within a six-month period, constitutes the third symptom domain. Symptoms must be exhibited during interaction with at least one individual who is not a sibling, and the frequency and intensity must be beyond what is developmentally normative for the child's age.

Conduct disorder represents a more severe pattern of behavior involving persistent violation of the rights of others and age-appropriate societal norms. The DSM-5 organizes conduct disorder symptoms into four categories: aggression to people and animals, including bullying, fighting, weapon use, physical cruelty, and forced sexual activity; destruction of property, including fire-setting and deliberate vandalism; deceitfulness or theft, including breaking into property, lying to obtain goods or avoid obligations, and shoplifting; and serious violations of rules, including staying out at night before age thirteen, running away from home, and truancy. The disorder is further specified as childhood-onset type when at least one criterion is present before age ten, or adolescent-onset type when no criteria appear before age ten, with the childhood-onset variant carrying a poorer prognosis.

Distinguishing between ODD and conduct disorder is clinically important for prognosis and treatment planning. ODD is generally less severe and presents primarily with oppositional and emotionally dysregulated behavior, while conduct disorder involves more serious violations of societal norms and the rights of others. ODD typically emerges in preschool or early school-age children, whereas conduct disorder more often becomes apparent during late childhood or adolescence. Some children with ODD progress to develop conduct disorder, and conduct disorder in turn represents a risk factor for antisocial personality disorder in adulthood. Empathy is typically preserved in ODD but may be diminished in conduct disorder, particularly in the subset of youth who exhibit the limited prosocial emotions specifier characterized by lack of remorse, callous disregard for others, shallow affect, and indifference to performance.

Treatment approaches for disruptive behavior disorders emphasize behavioral and family-based interventions. Parent training programs are the first-line treatment for ODD and teach caregivers to use consistent discipline, positive reinforcement for prosocial behavior, and effective communication strategies. Parent-Child Interaction Therapy is an evidence-based approach for younger children that coaches parents in real time to strengthen the parent-child relationship and improve behavior management. Multisystemic therapy is an intensive, community-based treatment designed for adolescents with conduct disorder that addresses multiple systems including family, school, peer group, and community. School-based behavioral interventions including functional behavioral assessments and behavior intervention plans provide structured support in the academic setting. Pharmacotherapy has a limited role and primarily targets comorbid conditions such as ADHD; there is no medication that effectively treats the core symptoms of ODD or conduct disorder.

<image>Panel A: Oppositional defiant disorder diagnostic criteria organized by the three symptom domains of angry/irritable mood, argumentative/defiant behavior, and vindictiveness with representative symptoms. Panel B: Conduct disorder symptom categories including aggression, destruction, deceitfulness/theft, and rule violations with onset type specification. Panel C: Comparative table differentiating ODD from conduct disorder across severity, age of onset, developmental trajectory, and empathy characteristics. Panel D: Treatment model for disruptive behavior disorders showing parent training and PCIT for ODD, multisystemic therapy for CD, school interventions, and the limited role of pharmacotherapy.</image>

Section 9: Other Child Psychiatric Conditions

Tic disorders represent a spectrum of neurodevelopmental conditions characterized by sudden, rapid, recurrent, nonrhythmic motor movements or vocalizations. Provisional tic disorder is diagnosed when tics have been present for less than one year, while persistent tic disorder applies when either motor or vocal tics, but not both, continue for more than one year. Tourette disorder requires the presence of both multiple motor tics and at least one vocal tic persisting for more than one year, with onset before age eighteen. Tics typically emerge between ages four and six, peak in severity during early adolescence, and improve or resolve by adulthood in the majority of cases. Treatment is indicated when tics cause distress or functional impairment and includes the Comprehensive Behavioral Intervention for Tics, habit reversal training, and pharmacological options such as alpha-2 agonists or antipsychotics for severe cases.

Enuresis is defined as the repeated voiding of urine into clothing or bedding, whether voluntary or involuntary, occurring at least twice weekly for at least three consecutive months in a child who has reached the age of five years. Primary enuresis refers to cases in which the child has never achieved sustained urinary continence, while secondary enuresis describes the recurrence of wetting after at least six months of established dryness. Nocturnal enuresis is far more common than diurnal enuresis and affects approximately five to ten percent of school-age children, with a strong genetic component. Treatment options include behavioral approaches such as the bedwetting alarm, which has the highest long-term cure rate, and pharmacological intervention with desmopressin for situations requiring rapid symptomatic control such as overnight camps or school trips.

Encopresis involves the repeated passage of feces into inappropriate places, occurring at least once monthly for at least three months in a child who has reached the chronological age of four years. The most common presentation involves retentive encopresis with constipation, in which chronic stool withholding leads to fecal impaction, rectal distension, and subsequent overflow incontinence. Non-retentive encopresis, which occurs without constipation, is less common and often has a behavioral etiology. Treatment of retentive encopresis begins with disimpaction using oral or rectal laxatives, followed by a maintenance bowel regimen and behavioral interventions including scheduled toileting, positive reinforcement, and dietary modifications to promote regular bowel movements.

Pediatric bipolar disorder remains a topic of significant debate within the field regarding its diagnostic boundaries and appropriate identification. The clinical presentation of bipolar disorder in children and adolescents may differ from the adult prototype, with more rapid cycling, mixed features, and chronic irritability described in some cases, though these atypical presentations have raised concerns about diagnostic validity and overdiagnosis. The introduction of disruptive mood dysregulation disorder in DSM-5 provides an alternative diagnostic construct for children with severe, chronic irritability and frequent temper outbursts who do not meet the episodic criteria for bipolar disorder, helping to reduce the inappropriate application of the bipolar diagnosis. When bipolar disorder is confirmed in youth, treatment follows adult guidelines with mood stabilizers and atypical antipsychotics, though the evidence base is more limited. Caution is warranted to avoid both underdiagnosis, which delays appropriate mood stabilization, and overdiagnosis, which exposes children to unnecessary pharmacotherapy.

<image>Panel A: Tic disorder spectrum showing provisional tic disorder, persistent tic disorder, and Tourette disorder with diagnostic duration criteria, natural history, and treatment options. Panel B: Enuresis classification into primary and secondary types with prevalence, genetic factors, and treatment approaches including behavioral alarm and desmopressin. Panel C: Encopresis with and without constipation showing pathophysiology of retentive overflow incontinence and stepwise treatment protocol. Panel D: Pediatric bipolar disorder diagnostic controversies, the role of DMDD as an alternative diagnosis for chronic irritability, and pharmacological treatment considerations in youth.</image>

Section 10: Special Issues in Child Psychiatry

Medication use in pediatric populations requires careful attention to developmental pharmacology and regulatory considerations. Many psychotropic medications used in children are prescribed off-label, as the majority of clinical trials have been conducted in adult populations. The principle of starting at low doses and titrating gradually applies broadly, though it is equally important to reach therapeutic doses rather than leaving patients on subtherapeutic regimens. Growth monitoring is particularly important for children taking stimulant medications, as appetite suppression and potential growth velocity attenuation necessitate regular measurement of height and weight. Prescribing requires informed consent from parents or guardians and developmentally appropriate assent from the child, and metabolic monitoring is essential when prescribing atypical antipsychotics given the heightened metabolic vulnerability of pediatric patients.

School-based services represent a critical component of comprehensive care for children with psychiatric conditions. The Individualized Education Program is developed for students who qualify for special education services under the Individuals with Disabilities Education Act and provides individualized goals, accommodations, modifications, and related services. Section 504 plans, established under Section 504 of the Rehabilitation Act, provide accommodations to students with disabilities who do not require special education but need supports to access the educational environment equitably. School psychologists play a valuable role in conducting educational and psychological evaluations, providing consultation to teachers, and delivering school-based interventions. Psychiatric clinicians should be familiar with these systems and prepared to communicate effectively with school teams to advocate for appropriate services.

The recognition and reporting of child abuse and neglect is a fundamental responsibility of all clinicians working with pediatric populations. Physical abuse may present with unexplained injuries, injuries in patterns consistent with implements or objects, bruising in non-mobile infants, or injuries inconsistent with the reported mechanism. Sexual abuse may be suggested by age-inappropriate sexual knowledge or behavior, genital or anal injuries, and sexually transmitted infections. Emotional abuse manifests through developmental regression, attachment disturbances, and behavioral problems, while neglect presents with poor hygiene, malnutrition, untreated medical conditions, and inadequate supervision. All physicians are mandated reporters and have a legal obligation to report reasonable suspicion of child maltreatment to child protective services, regardless of the certainty of the assessment.

Trauma-informed care is an organizational and clinical framework that recognizes the pervasive impact of adverse childhood experiences on development, behavior, and mental health. Research on adverse childhood experiences demonstrates that exposure to abuse, neglect, household dysfunction, and community violence during childhood is common and produces dose-dependent effects on physical and mental health outcomes across the lifespan. Screening for trauma history should be incorporated into routine psychiatric assessment of children and adolescents. Trauma-focused cognitive behavioral therapy represents the treatment with the strongest evidence base for childhood PTSD and involves trauma narration, cognitive processing of trauma-related beliefs, and gradual exposure to trauma reminders, with a parallel parent component. Creating a sense of physical and emotional safety within the clinical environment is foundational to effective engagement with traumatized youth.

<image>Panel A: Pediatric psychopharmacology principles including off-label prescribing considerations, dosing strategies, informed consent/assent, and metabolic monitoring requirements. Panel B: School-based service continuum showing IEP versus 504 Plan differences in eligibility, services provided, and legal frameworks. Panel C: Child abuse and neglect recognition guide organized by type showing physical, sexual, emotional abuse and neglect indicators with mandatory reporting requirements. Panel D: Trauma-informed care framework showing adverse childhood experience prevalence, developmental impact, screening approaches, and evidence-based trauma treatments including TF-CBT.</image>

Summary

• ADHD requires at least six symptoms of inattention and/or hyperactivity-impulsivity present before age twelve in two or more settings, with stimulant medications as first-line pharmacotherapy and behavioral interventions as essential adjuncts
• Autism spectrum disorder is diagnosed by deficits in social communication plus restricted and repetitive behaviors, with Applied Behavior Analysis as the primary evidence-based intervention and no medication for core symptoms
• Separation anxiety disorder commonly presents as school refusal in children and is treated with CBT, graduated return to school, and SSRIs when severity warrants pharmacotherapy
• Pediatric depression may present primarily with irritability rather than sadness, with CBT as first-line for mild to moderate cases and fluoxetine as the preferred medication when pharmacotherapy is indicated
• The black box warning on all antidepressants in youth requires close monitoring for suicidal ideation and behavior during early treatment
• Oppositional defiant disorder is characterized by angry, argumentative, and vindictive behavior with parent training as first-line treatment
• Conduct disorder involves aggression, destruction, deceit, and serious rule violations, with multisystemic therapy for severe cases
• Tourette disorder requires both motor and vocal tics persisting for more than one year, with CBIT and habit reversal training as behavioral interventions
• School services include IEPs under IDEA for special education and Section 504 plans for accommodations
• Adverse childhood experiences are common and produce lasting effects on development, with trauma-focused CBT as the treatment of choice for childhood PTSD

Key Terms

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