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Childhood Mental Disorders and Illnesses

Published on · Updated on

Childhood disorders include behavioral, mental health, and neurodevelopmental conditions that greatly affect a child’s well-being, functioning, development, and beyond⁠[1]. 

The effects of these disorders can vary considerably, depending on the condition, the severity, early diagnosis and intervention, and the individual child or adolescent. Early intervention is essential in order to help children manage these challenges and support their healthy development.

\"A

Key takeaways

  • Childhood mental health and developmental conditions can affect learning, behavior, relationships, and overall well-being.
  • Diagnosis typically combines developmental history, interviews, observations, and standardized assessments.
  • Early, individualized treatment can involve therapy, medication when appropriate, and support from family and school.

Common Childhood Conditions

There are many different conditions that affect children and adolescents; however, some common childhood disorders may include:⁠[1],⁠[2]

    \n
  • Attention-deficit/hyperactivity disorder (ADHD): A disorder characterized by persistent patterns of inattention, hyperactivity, and impulsivity that interfere with functioning or development.
    • \n
  • Autism spectrum disorder (ASD): A developmental disorder that affects communication, behavior, and social interaction, often accompanied by restricted and repetitive behaviors.
    • \n
  • Oppositional defiant disorder (ODD): A behavior disorder involving a pattern of angry, irritable moods, argumentative, defiant behavior, and vindictiveness towards authority figures.
    • \n
  • Conduct disorder: A more severe behavior disorder involving aggressive or destructive behaviors, deceitfulness, theft, and serious rule violations.
    • \n
  • Learning disabilities: Disorders that affect the ability to understand or use spoken or written language, do mathematical calculations, coordinate movements, or focus attention.
    • \n
  • Depression: A mood disorder in children marked by persistent sadness, irritability, and loss of interest in activities, impacting daily functioning.
    • \n
  • Early childhood feeding disorder: A condition characterized by persistent difficulties in eating or feeding, which can lead to inadequate nutrition and growth issues.
    • \n
  • Selective mutism: A childhood anxiety disorder where a child is unable to speak in certain social situations despite being able to speak in others.
    • \n
  • Reactive attachment disorder: A condition in which a child fails to establish healthy attachments with caregivers, often due to severe early neglect or abuse.
    • \n
  • Childhood separation anxiety disorder: An anxiety disorder where a child experiences excessive fear and distress about being separated from primary caregivers.
    • \n
  • Stereotypic movement disorder: A condition characterized by repetitive, purposeless movements, such as hand-flapping or head-banging, that can interfere with normal activities or cause self-injury.
    • \n
  • Elimination disorders: Disorders related to the inappropriate elimination of urine or feces, such as bedwetting or soiling.
    • \n
  • Encopresis: A condition in which a child over the age of four has repeated, involuntary or voluntary bowel movements in inappropriate places.
    • \n
  • Enuresis: A disorder involving the repeated, involuntary or voluntary release of urine, typically at night (bedwetting) in children over the age of five.
    • \n
  • Tourette syndrome: A neurological disorder characterized by repetitive, involuntary movements and vocalizations called tics.
    • \n
  • Post-traumatic stress disorder (PTSD): A disorder that can develop after a child experiences a traumatic event, characterized by flashbacks, severe anxiety, and uncontrollable thoughts about the event.
    • \n

Subject matter expert

\"\"

Holly Schiff Psy.D.

Children, adolescents, and families

View experience

How are Childhood Disorders Diagnosed?

The diagnostic process varies from condition to condition. However, generally speaking, childhood disorders are diagnosed through a comprehensive evaluation process that typically involves a combination of methods. 

This process includes clinical interviews with the child and their parents or caregivers, behavioral observations, and standardized psychological assessments. 

Healthcare professionals, such as pediatricians, psychologists, psychiatrists, or specialized therapists, gather detailed information about the child's medical, developmental, and family history. 

They also assess the child's behavior, emotional state, and social interactions. In some cases, additional medical tests, such as neurological examinations or genetic testing, may be conducted to rule out other conditions. 

Diagnoses are made based on criteria outlined in standardized manuals like the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) or the International Classification of Diseases (ICD). This thorough assessment helps professionals understand the child's symptoms and behaviors to provide an accurate diagnosis and develop an appropriate treatment plan.

How are Childhood Disorders Treated?

Treatment is highly individualized and tailored to meet the child’s needs. No two treatment plans are exactly alike and depend on many factors, such as:

    \n
  • The specific diagnosis
    • \n
  • The severity of the symptoms
    • \n
  • The child’s mental health
    • \n
  • The child’s physical health
    • \n
  • The presence of co-occurring conditions
    • \n
  • The child’s treatment history
    • \n
  • The child’s age, developmental level, and temperament
    • \n
  • The family’s capacity to support the child
    • \n
  • The presence of family stressors
    • \n
  • The child’s school and peer relationships
    • \n
  • The specific goals for the child
    • \n
  • Available resources and services
    • \n

Childhood disorders are treated using a combination of therapeutic approaches tailored to the specific needs of the child and the nature of the disorder. 

Common treatments include behavioral therapy, such as cognitive behavioral therapy (CBT) for anxiety and mood disorders, which helps children change negative thought patterns and behaviors⁠[1].,⁠[3]

Other forms of therapy, like play therapy or family therapy, may be used to improve communication and resolve family issues⁠[1].

For some disorders, medication may be prescribed to manage symptoms, such as stimulants for ADHD or antidepressants for depression⁠[1].,⁠[3]

Educational support, including individualized education programs (IEPs), is often provided to help children with learning disabilities or developmental disorders succeed academically. 

In the case of a disorder like autism spectrum disorder, the treatment plan may involve applied behavioral analysis (ABA), occupational therapy, and/or speech therapy⁠[4].

In addition, parent training and support groups can equip families with strategies to manage and support their child's condition. A multidisciplinary approach, involving healthcare professionals, educators, and families, is crucial to ensure comprehensive and effective treatment⁠[1].

​

References

  1. Scott JG, Mihalopoulos C, Erskine HE, et al. (2016). Childhood Mental and Developmental Disorders. In: Patel V, Chisholm D, Dua T, et al. editors. Mental, Neurological, and Substance Use Disorders: Disease Control Priorities, Third Edition (Volume 4). Washington (DC): The International Bank for Reconstruction and Development / The World Bank; 2016 Mar 14. Chapter 8. National Library of Medicine.
  2. Centers for Disease Control and Prevention. (n.d.). [Children’s mental health symptoms resource]. Centers for Disease Control and Prevention. Original online source unavailable; the exact page title and publication date could not be verified.
  3. Klein RG, & Slomkowski C. (1993). Treatment of psychiatric disorders in children and adolescents. Psychopharmacology bulletin, 29(4), 525-535. PubMed.
  4. MaineHealth. (n.d.). mainehealth.org. Accessed October 10 2026.

About MentalHealth.com

MentalHealth.com helps people understand themselves, build healthier relationships, and access the right care. We bring together mental health education, diagnostics, and care management to support well-being throughout every phase of life.

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Explore growth, transitions, and mental health through the different stages of life.

Explore community
","text":"Home Library Lifespan Development Childhood Mental Disorders and Illnesses Childhood Mental Disorders and Illnesses Published on June 25, 2024 · Updated on January 15, 2026 Childhood disorders include behavioral, mental health, and neurodevelopmental conditions that greatly affect a child’s well-being, functioning, development, and beyond⁠[1]. The effects of these disorders can vary considerably, depending on the condition, the severity, early diagnosis and intervention, and the individual child or adolescent. Early intervention is essential in order to help children manage these challenges and support their healthy development. Key takeaways Childhood mental health and developmental conditions can affect learning, behavior, relationships, and overall well-being. Diagnosis typically combines developmental history, interviews, observations, and standardized assessments. Early, individualized treatment can involve therapy, medication when appropriate, and support from family and school. Common Childhood Conditions There are many different conditions that affect children and adolescents; however, some common childhood disorders may include:⁠[1],⁠[2] Attention-deficit/hyperactivity disorder (ADHD): A disorder characterized by persistent patterns of inattention, hyperactivity, and impulsivity that interfere with functioning or development. Autism spectrum disorder (ASD): A developmental disorder that affects communication, behavior, and social interaction, often accompanied by restricted and repetitive behaviors. Oppositional defiant disorder (ODD): A behavior disorder involving a pattern of angry, irritable moods, argumentative, defiant behavior, and vindictiveness towards authority figures. Conduct disorder: A more severe behavior disorder involving aggressive or destructive behaviors, deceitfulness, theft, and serious rule violations. Learning disabilities: Disorders that affect the ability to understand or use spoken or written language, do mathematical calculations, coordinate movements, or focus attention. Depression: A mood disorder in children marked by persistent sadness, irritability, and loss of interest in activities, impacting daily functioning. Early childhood feeding disorder: A condition characterized by persistent difficulties in eating or feeding, which can lead to inadequate nutrition and growth issues. Selective mutism: A childhood anxiety disorder where a child is unable to speak in certain social situations despite being able to speak in others. Reactive attachment disorder: A condition in which a child fails to establish healthy attachments with caregivers, often due to severe early neglect or abuse. Childhood separation anxiety disorder: An anxiety disorder where a child experiences excessive fear and distress about being separated from primary caregivers. Stereotypic movement disorder: A condition characterized by repetitive, purposeless movements, such as hand-flapping or head-banging, that can interfere with normal activities or cause self-injury. Elimination disorders: Disorders related to the inappropriate elimination of urine or feces, such as bedwetting or soiling. Encopresis: A condition in which a child over the age of four has repeated, involuntary or voluntary bowel movements in inappropriate places. Enuresis: A disorder involving the repeated, involuntary or voluntary release of urine, typically at night (bedwetting) in children over the age of five. Tourette syndrome: A neurological disorder characterized by repetitive, involuntary movements and vocalizations called tics. Post-traumatic stress disorder (PTSD): A disorder that can develop after a child experiences a traumatic event, characterized by flashbacks, severe anxiety, and uncontrollable thoughts about the event. Subject matter expert Holly Schiff Psy.D. Children, adolescents, and families View experience How are Childhood Disorders Diagnosed? The diagnostic process varies from condition to condition. However, generally speaking, childhood disorders are diagnosed through a comprehensive evaluation process that typically involves a combination of methods. This process includes clinical interviews with the child and their parents or caregivers, behavioral observations, and standardized psychological assessments. Healthcare professionals, such as pediatricians, psychologists, psychiatrists, or specialized therapists, gather detailed information about the child's medical, developmental, and family history. They also assess the child's behavior, emotional state, and social interactions. In some cases, additional medical tests, such as neurological examinations or genetic testing, may be conducted to rule out other conditions. Diagnoses are made based on criteria outlined in standardized manuals like the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) or the International Classification of Diseases (ICD). This thorough assessment helps professionals understand the child's symptoms and behaviors to provide an accurate diagnosis and develop an appropriate treatment plan. How are Childhood Disorders Treated? Treatment is highly individualized and tailored to meet the child’s needs. No two treatment plans are exactly alike and depend on many factors, such as: The specific diagnosis The severity of the symptoms The child’s mental health The child’s physical health The presence of co-occurring conditions The child’s treatment history The child’s age, developmental level, and temperament The family’s capacity to support the child The presence of family stressors The child’s school and peer relationships The specific goals for the child Available resources and services Childhood disorders are treated using a combination of therapeutic approaches tailored to the specific needs of the child and the nature of the disorder. Common treatments include behavioral therapy, such as cognitive behavioral therapy (CBT) for anxiety and mood disorders, which helps children change negative thought patterns and behaviors⁠[1].,⁠[3] Other forms of therapy, like play therapy or family therapy, may be used to improve communication and resolve family issues⁠[1]. For some disorders, medication may be prescribed to manage symptoms, such as stimulants for ADHD or antidepressants for depression⁠[1].,⁠[3] Educational support, including individualized education programs (IEPs), is often provided to help children with learning disabilities or developmental disorders succeed academically. In the case of a disorder like autism spectrum disorder, the treatment plan may involve applied behavioral analysis (ABA), occupational therapy, and/or speech therapy⁠[4]. In addition, parent training and support groups can equip families with strategies to manage and support their child's condition. A multidisciplinary approach, involving healthcare professionals, educators, and families, is crucial to ensure comprehensive and effective treatment⁠[1]. ​ References Scott JG, Mihalopoulos C, Erskine HE, et al. (2016). Childhood Mental and Developmental Disorders. In: Patel V, Chisholm D, Dua T, et al. editors. Mental, Neurological, and Substance Use Disorders: Disease Control Priorities, Third Edition (Volume 4). Washington (DC): The International Bank for Reconstruction and Development / The World Bank; 2016 Mar 14. Chapter 8. National Library of Medicine. Centers for Disease Control and Prevention. (n.d.). [Children’s mental health symptoms resource]. Centers for Disease Control and Prevention. Original online source unavailable; the exact page title and publication date could not be verified. Klein RG, & Slomkowski C. (1993). Treatment of psychiatric disorders in children and adolescents. Psychopharmacology bulletin, 29(4), 525-535. PubMed. MaineHealth. (n.d.). mainehealth.org. Accessed October 10 2026. About MentalHealth.com MentalHealth.com helps people understand themselves, build healthier relationships, and access the right care. We bring together mental health education, diagnostics, and care management to support well-being throughout every phase of life. Related community Lifespan Development Explore growth, transitions, and mental health through the different stages of life. Explore community Table of contentsChoose a section Common Childhood Conditions How are Childhood Disorders Diagnosed? How are Childhood Disorders Treated? 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