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Mental health challenges affect millions of children and adolescents across the United States, with recent data showing that approximately 20.3% of adolescents ages 12-17 years have a current, diagnosed mental or behavioral health condition. Understanding these common issues is essential for parents, educators, and healthcare providers to identify early warning signs and connect young people with appropriate support and treatment.

The landscape of child and adolescent mental health has evolved significantly in recent years. Between 2021 and 2023, there were improvements in some areas, including decreases in persistent feelings of sadness or hopelessness from 42% to 40% overall, and from 57% to 53% among female students. However, challenges persist, particularly with more than 1 in 7 U.S. youth ages 6-17 experiencing a mental health disorder each year, highlighting the ongoing need for awareness, early intervention, and comprehensive support systems.

Table of Contents

  • Overview of Common Mental Health Conditions
  • Anxiety Disorders
  • Depression
  • Attention-Deficit/Hyperactivity Disorder (ADHD)
  • Oppositional Defiant Disorder (ODD)
  • Conduct Disorder
  • Autism Spectrum Disorder
  • Self-Harm and Non-Suicidal Self-Injury
  • Intellectual and Developmental Disabilities
  • Risk Factors and Protective Factors
  • Treatment Options and Effectiveness
  • School and Family Support
  • Frequently Asked Questions
  • How Therapy Can Help / Find a Therapist

Overview of Common Mental Health Conditions

Mental health conditions in children and adolescents encompass a wide range of emotional, behavioral, and developmental challenges. Based on US data from 2022–2023, 11% of children ages 3-17 had current, diagnosed anxiety, 8% had behavior disorders, and 4% had current, diagnosed depression. These conditions often co-occur and can significantly impact a child's academic performance, social relationships, and overall quality of life.

Early identification is crucial because up to 50% of lifetime mental health disorders develop before age 14. Understanding the signs and symptoms of common mental health issues helps parents, teachers, and healthcare providers intervene early, when treatment is often most effective.

Anxiety Disorders

Anxiety disorders are among the most prevalent mental health conditions affecting young people. In 2023, approximately 16.1% of 12- to 17-year-olds had a current anxiety diagnosis, while 31.9% will experience an anxiety disorder at some point during their teen years. Anxiety disorders include:

  • Generalized anxiety disorder – excessive worry about various aspects of life
  • Social anxiety disorder – intense fear of social situations
  • Specific phobias – extreme fear of particular objects or situations
  • Panic disorder – recurring panic attacks
  • Separation anxiety disorder – excessive fear of being apart from caregivers

Signs and Symptoms

Children with anxiety may experience:

  • Persistent worry or fear that interferes with daily activities
  • Physical symptoms like headaches, stomachaches, or muscle tension
  • Avoidance of school, social situations, or specific activities
  • Sleep difficulties
  • Irritability or restlessness
  • Difficulty concentrating

Gender Differences

A greater proportion of females had diagnosed anxiety (20.1% vs. 12.3%) compared to males, highlighting the importance of understanding how anxiety may present differently across genders.

Depression

Depression significantly impacts children and adolescents, with 8.4% of adolescents ages 12-17 having a current depression diagnosis in 2023. More concerning, among adolescents aged 12 to 17, 18% had a past year major depressive episode (13% with severe impairment).

Key Statistics

  • Nearly 1 in 5 (18%) youth ages 12 to 17 have had at least one major depressive episode in the past year — about 4.5 million adolescents. A larger share, almost 1 in 4 (23%), had either a major depressive episode or a substance use disorder in the previous year
  • Depression shows gender disparities, with 10.9% of females vs. 6.0% of males having diagnosed depression

Warning Signs

Children and adolescents with depression may exhibit:

  • Persistent sadness or hopelessness
  • Loss of interest in previously enjoyed activities
  • Changes in appetite or sleep patterns
  • Fatigue or loss of energy
  • Difficulty concentrating
  • Social withdrawal
  • Thoughts of death or suicide

Attention-Deficit/Hyperactivity Disorder (ADHD)

ADHD is a neurodevelopmental disorder characterized by persistent patterns of inattention, hyperactivity, and impulsivity. The prevalence of ADHD among US children and adolescents aged 3-17 years is 9.57%. The prevalence of ADHD in childhood is approximately 5-7%, with approximately 50–70% of childhood-onset cases persisting into adulthood.

Comorbidity with Other Conditions

Research shows that children and adolescents with ADHD had a significantly higher risk of depressive disorder than those without ADHD (pooled relative risk = 2.27) and were at a higher risk of major depressive disorder (pooled RR = 2.20). This highlights the importance of comprehensive assessment and treatment.

Treatment Considerations

Only 11% of eligible trials reported anxiety and/or depression as an outcome or side effect, limiting conclusions about ADHD medications' impact on mood symptoms. However, no significant effect of medication was found for symptoms of anxiety or depression in randomized controlled trials.

Oppositional Defiant Disorder (ODD)

Oppositional Defiant Disorder is characterized by a persistent pattern of angry/irritable mood, argumentative/defiant behavior, and vindictiveness. According to the DSM-5-TR, the prevalence of oppositional defiant disorder is 3.3%. In the literature, prevalence in children and adolescents is between 2.6% and 15.6% in community samples.

Key Characteristics

  • Gender differences: The relative risk of developing oppositional defiant disorder in male individuals compared to female individuals is roughly 1.6
  • Developmental course: The prevalence of oppositional defiant disorder tends to decrease with age
  • Prognosis: A diagnosis of oppositional defiant disorder increases the risk of developing mood, anxiety, and substance use disorders later in life

Symptoms Include

  • Frequent temper loss
  • Argumentative behavior with authority figures
  • Deliberate attempts to annoy others
  • Blaming others for mistakes
  • Easily annoyed or angered
  • Spiteful or vindictive behavior

Conduct Disorder

Conduct Disorder involves more severe behavioral problems than ODD. The prevalence of CD in the United States is 6% to 16% in males and 2% to 9% in females. Symptoms appear earlier in boys at a median age of 11 years compared to girls with a median age of 15 years.

Long-term Implications

The childhood onset type is associated with poor outcomes in adulthood, an increase in criminal behavior, violence, and progression to antisocial behavior. Children with CD are at increased risk for substance use disorders and antisocial personality disorder.

Warning Signs

  • Aggression toward people and animals
  • Destruction of property
  • Deceitfulness or theft
  • Serious violations of rules
  • Truancy from school
  • Running away from home

Autism Spectrum Disorder

Autism Spectrum Disorder (ASD) is a developmental disability characterized by differences in social communication and interaction, along with restricted or repetitive behaviors and interests. About 1 in 31 (3.2%) children aged 8 years has been identified with ASD according to estimates from CDC's ADDM Network.

Key Demographics

  • ASD is over 3 times more common among boys than among girls
  • ASD is 3.4 times as prevalent among boys (4.9%) as among girls (1.4%)
  • ASD is reported to occur in all racial, ethnic, and socioeconomic groups

Recent Trends

In Maryland, the highest autism prevalence estimates among 8-year-olds in 2022 were observed in Black children (1 in 27), followed by Asian/Pacific Islander (1 in 32), multiracial (1 in 34), Hispanic (1 in 35), and white (1 in 52) children. The number of 8-year-old girls identified as having autism surpassed 1%, with 1 in 93 having autism, for the first time.

Self-Harm and Non-Suicidal Self-Injury

Self-harm is a serious concern among adolescents. A nationwide study found that 16.1% of adolescents reported self-harm in the past year. About 10–20% report self-harm at least once. Over a one-year period, 27% of young adolescents reported thoughts of self-harm and 15% reported at least one act of self-harm.

Risk Factors

  • Teenagers who reported that they had experienced being bullied online were 2.47 times more likely to engage in self-harm than their peers who had not
  • Those spending more than 3 hours daily on social media had elevated rates of self-harm (unadjusted OR = 2.74)
  • Individuals diagnosed with mental health disorders, such as depression and anxiety, are at a significantly higher risk of engaging in self-harming behaviors

Gender Differences

In 2018, 17.6% of U.S. adolescents aged 14 to 18 engaged in non-suicidal self-injury, with boys at 11.3% and girls at 23.8%. Teenage American girls were nearly twice as likely to engage in self-harm as boys.

Intellectual and Developmental Disabilities

Intellectual disabilities and other developmental disabilities affect a significant portion of children. During 2019–2021, the prevalence of any diagnosed developmental disability in children aged 3–17 years increased from 7.40% in 2019 to 8.56% in 2021.

Prevalence by Type

  • Intellectual disability (ID) affects 1.72% of children aged 3-17 years
  • No significant change in the prevalence of diagnosed intellectual disability was observed during 2019–2021 (1.70% in 2019, 2.20% in 2020, and 1.65% in 2021)
  • In the United States, about 1 in 6 children have a developmental disability

Gender and Age Patterns

  • The prevalence of any developmental disability was higher in boys (10.76%) than girls (5.31%)
  • The prevalence of intellectual disability increased with age, from 1.39% for children aged 3–7 years to 2.35% for children aged 13–17 years

Risk Factors and Protective Factors

Risk Factors

Understanding risk factors helps identify children who may be more vulnerable to mental health challenges:

  • Adverse childhood experiences (ACEs): Adverse childhood experiences are potentially traumatic experiences in childhood that have a profound impact on physical and mental health
  • Family history: Many mental health conditions have genetic components
  • Environmental stressors: Poverty, violence, instability
  • Bullying and peer problems: Adolescents with a current diagnosis were twice as likely to be a victim of bullying in the past 12 months
  • Academic difficulties: Adolescents with a current diagnosis were 3 times as likely to be disengaged from school and 5 times as likely to miss 11 or more days of school for health reasons

Protective Factors

Data from adolescents ages 12-17 in 2021-2023 indicate that 58% report they always or usually receive social and emotional support, 49% report they receive peer support a lot of the time, 66% report they receive parent support a lot of the time, and 79% report they have at least one adult in their life who makes a positive difference.

Treatment Options and Effectiveness

Evidence-Based Treatments

Research shows several effective treatment approaches for child and adolescent mental health conditions:

Cognitive Behavioral Therapy (CBT) Cognitive Behavioral Therapy (CBT) has the strongest evidence base for treating adolescent depression and anxiety. CBT helps teens identify and change negative thought patterns and behaviors. Studies show 60-70% of teens with depression respond well to CBT.

Family-Based Interventions Family involvement improves treatment outcomes. When parents participate in therapy, teens do better than when they attend therapy alone. Family-based treatments are particularly effective for younger adolescents.

Medication Management Medication can be helpful for some teens, especially those with moderate to severe symptoms. SSRIs are the most commonly prescribed and have good evidence for safety and effectiveness in adolescents. For moderate to severe symptoms, research shows combination treatment (therapy plus medication) works better than either alone.

Treatment Duration

For depression, most teens need 12-16 weeks of weekly therapy to see significant improvement. Some teens feel better sooner, others need longer. Anxiety treatment often takes 8-12 weeks.

Access to Care Challenges

Despite available treatments, 20% of adolescents ages 12-17 reported having unmet mental health care needs. A majority (54%) of U.S. youth ages 12 to 17 still have difficulty getting needed mental health care.

School and Family Support

School-Based Support

Schools play a crucial role in identifying and supporting students with mental health challenges. CDC's What Works in Schools program helps promote adolescent health and well-being by supporting school districts to teach quality health education, connect young people to needed health services, and make school environments safer and more supportive.

Creating Supportive Environments

We all have a role to play in ensuring that all children and adolescents have positive experiences. There is more we can do to foster these experiences, so all children reach their full potential and live healthy lives.

Early Intervention Importance

Early treatment changes outcomes. Teens who get effective treatment develop coping skills that serve them for years. Treatment also prevents depression from becoming deeply ingrained, making future episodes less likely or less severe.

Frequently Asked Questions

What are the most common mental health conditions in children and adolescents?

The most common mental health conditions include anxiety disorders (affecting 16.1% of adolescents), ADHD (9.57% of children), depression (8.4% of adolescents), and behavior disorders (8% of children ages 3-17). These conditions often occur together and can significantly impact a child's daily functioning.

At what age do mental health conditions typically emerge?

Mental health conditions can emerge at various ages, but many begin in childhood or adolescence. Up to 50% of lifetime mental health disorders develop before age 14. ADHD symptoms often appear before age 12, anxiety can develop throughout childhood and adolescence, and depression rates increase significantly during the teen years, particularly for girls.

How can parents recognize if their child needs mental health support?

Parents should watch for persistent changes in mood, behavior, or functioning that last more than two weeks. Warning signs include withdrawal from friends and activities, declining school performance, excessive worry or fear, dramatic mood swings, changes in eating or sleeping patterns, frequent physical complaints without medical cause, and expressions of hopelessness or thoughts of self-harm.

What treatments are most effective for children with mental health conditions?

Evidence-based treatments include Cognitive Behavioral Therapy (CBT), which shows 60-70% effectiveness for teen depression, family-based interventions that improve outcomes when parents participate, medication management for moderate to severe symptoms, and integrated behavioral health care combining therapy with medical care. Treatment typically requires 8-16 weeks to see significant improvement.

How prevalent is self-harm among adolescents?

Self-harm is unfortunately common, with 16.1% of adolescents reporting self-harm in the past year and 27% reporting thoughts of self-harm. Girls are nearly twice as likely as boys to engage in self-harm (23.8% vs. 11.3%). Risk factors include depression, anxiety, online bullying, and spending more than 3 hours daily on social media.

Are there gender differences in mental health conditions?

Yes, significant gender differences exist. Girls have higher rates of anxiety (20.1% vs. 12.3%) and depression (10.9% vs. 6.0%), while boys are more likely to have ADHD, autism (3.4 times more common), and conduct disorder. Boys also have higher rates of any developmental disability (10.76% vs. 5.31%).

How Therapy Can Help / Find a Therapist

Mental health treatment can make a significant difference in the lives of children and adolescents. Professional therapy provides a safe space for young people to express their feelings, learn coping strategies, and develop resilience. Research consistently shows that early intervention leads to better long-term outcomes.

If you're concerned about a child's mental health, consider reaching out to a qualified mental health professional who specializes in working with children and adolescents. The right therapist can provide assessment, diagnosis, and evidence-based treatment tailored to your child's specific needs.

[Find a child and adolescent therapist in your area through the GoodTherapy directory](https://www.goodtherapy.org/find-therapist.html)

Remember, seeking help is a sign of strength, not weakness. With appropriate support and treatment, children and adolescents with mental health challenges can thrive and reach their full potential.

References:

  1. Aggarwal, A., & Marwaha, R. (2024). Oppositional defiant disorder. In StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing. Retrieved from https://www.ncbi.nlm.nih.gov/books/NBK557443/
  2. Alagarajah, J., Ceccolini, D., & Butler, S. (2024). Digital mental health interventions for treating mental disorders in young people based in low- and middle-income countries: A systematic review of the literature. Global Mental Health, 11, e74. https://doi.org/10.1017/gmh.2024.74
  3. American Academy of Pediatrics. (2021). AAP-AACAP-CHA declaration of a national emergency in child and adolescent mental health. Pediatrics, 148(5), e2021054571.
  4. American Psychiatric Association. (2024). Diagnostic and Statistical Manual of Mental Disorders (5th ed., text rev.). American Psychiatric Publishing.
  5. Anderson, K.N., et al. (2024). Prevalence of positive childhood experiences and associations with current anxiety, depression, and behavioral or conduct problems among U.S. children aged 6–17 years. MMWR Morbidity and Mortality Weekly Report, 73(15), 334-339.
  6. Asarnow, J.R., Rozenman, M., Wiblin, J., & Zeltzer, L. (2015). Integrated medical-behavioral care compared with usual primary care for child and adolescent behavioral health: A meta-analysis. JAMA Pediatrics, 169(10), 929-937. https://doi.org/10.1001/jamapediatrics.2015.1141
  7. Aspen Institute. (2025). Addressing the child and adolescent mental health crisis. Aspen Health Strategy Group Annual Report. Retrieved from https://www.aspeninstitute.org/wp-content/uploads/2025/04/Report-Addressing-the-Child-and-Adolescent-Mental-Health-Crisis.pdf
  8. Benevides, T.W., Carretta, H.J., Rust, K.L., & Shea, L. (2024). Prevalence of intellectual disability among adults born in the 1980s and 1990s in the United States. Journal of Intellectual Disability Research, 68(2), 163-175. https://doi.org/10.1111/jir.13119
  9. Bryant, A., Schlesinger, H., Sideri, A., et al. (2023). A meta-analytic review of the impact of ADHD medications on anxiety and depression in children and adolescents. European Child & Adolescent Psychiatry, 32, 1885–1898. https://doi.org/10.1007/s00787-022-02004-8
  10. Centers for Disease Control and Prevention. (2024). CDC data show improvements in youth mental health but need for safer and more supportive schools. Retrieved from https://www.cdc.gov/media/releases/2024/p0806-youth-mental-health.html
  11. Centers for Disease Control and Prevention. (2025). Data and statistics on children's mental health. Retrieved from https://www.cdc.gov/children-mental-health/data-research/index.html
  12. Centers for Disease Control and Prevention. (2025). Youth risk behavior survey data summary & trends report: 2013–2023. Retrieved from https://www.cdc.gov/yrbs/dstr/
  13. Chen, C., Zhang, Y., Liu, S., et al. (2024). Effects of ADHD and ADHD medications on depression and anxiety in children and adolescents: A systematic review and meta-analysis. Journal of Psychiatric Research, 179, 724-731. https://doi.org/10.1016/j.jpsychires.2024.07246
  14. Garcia-Argibay, M., du Rietz, E., Lu, Y., et al. (2024). Systematic review and meta-analysis: Predictors of adult psychiatric outcomes of childhood attention-deficit/hyperactivity disorder. Journal of the American Academy of Child & Adolescent Psychiatry, 63(12), 1178-1192. https://doi.org/10.1016/j.jaac.2024.01.357
  15. Hawton, K., Saunders, K., Topiwala, A., & Haw, C. (2013). Psychiatric disorders in patients presenting to hospital following self-harm: A systematic review. Journal of Affective Disorders, 147(1-3), 38-48. https://doi.org/10.1016/j.jad.2012.10.010
  16. Leeb, R.T., Danielson, M.L., Claussen, A.H., et al. (2024). Trends in mental, behavioral, and developmental disorders among children and adolescents in the US, 2016–2021. Preventing Chronic Disease, 21, 240142. DOI: http://dx.doi.org/10.5888/pcd21.240142
  17. Lehtimaki, S., Martic, J., Wahl, B., et al. (2021). Evidence on digital mental health interventions for adolescents and young people: Systematic overview. JMIR Mental Health, 8(4), e25847. https://doi.org/10.2196/25847
  18. Li, J., He, J., Ouyang, F., et al. (2025). Global, regional, and national burden of self-harm among adolescents aged 10-24 years from 1990 to 2021, temporal trends, health inequities and projection to 2041. Frontiers in Psychiatry, 16, 1564537. https://doi.org/10.3389/fpsyt.2025.1564537
  19. Liu, Y., Wang, X., Chen, T., et al. (2025). Prevalence, comorbidity, and demographic patterns of oppositional defiant disorder and conduct disorder in Chinese children and adolescents: A systematic review. Frontiers in Psychology, 16, 1691623. https://doi.org/10.3389/fpsyg.2025.1691623
  20. Liverpool, S., McDonagh, C., Feather, J., et al. (2025). Updates on digital mental health interventions for children and young people: Systematic overview of reviews. European Child & Adolescent Psychiatry. https://doi.org/10.1007/s00787-024-02521-1
  21. Lowet, D.S., Vaida, F., Hesselink, J.R., et al. (2024). Novel oppositional defiant disorder or conduct disorder 24 months after traumatic brain injury in children and adolescents. Journal of Neuropsychiatry and Clinical Neurosciences, 36(1), 53-62. https://doi.org/10.1176/appi.neuropsych.20220094
  22. Madigan, S., Racine, N., Vaillancourt, T., et al. (2023). Changes in depression and anxiety among children and adolescents from before to during the COVID-19 pandemic: A systematic review and meta-analysis. JAMA Pediatrics, 177(6), 567–581. DOI: 10.1001/jamapediatrics.2023.0846
  23. McGorry, P., Mei, C., Chanen, A., et al. (2024). The Lancet psychiatry commission on youth mental health. The Lancet Psychiatry, 11(9), 731-774. https://doi.org/10.1016/S2215-0366(24)00163-9
  24. Mojtabai, R., Olfson, M., & Han, B. (2024). Trends in mental disorders in children and adolescents receiving treatment in the state mental health system. Journal of the American Academy of Child & Adolescent Psychiatry, 64(8), 1012-1025. https://doi.org/10.1016/j.jaac.2024.01.017
  25. Monto, M.A., McRee, N., & Deryck, F.S. (2018). Nonsuicidal self-injury among a representative sample of US adolescents. American Journal of Public Health, 108(8), 1042-1048. https://doi.org/10.2105/AJPH.2018.304470
  26. National Alliance on Mental Illness. (2025). Mental health by the numbers. Retrieved from https://www.nami.org/mental-health-by-the-numbers/
  27. National Academies of Sciences, Engineering, and Medicine. (2024). Mental health challenges and interventions for children and adolescents in the 21st century. Washington, DC: The National Academies Press. https://doi.org/10.17226/26759
  28. National Institute of Mental Health. (2024). Child and adolescent mental health. Retrieved from https://www.nimh.nih.gov/health/topics/child-and-adolescent-mental-health
  29. Office of Population Affairs. (2024). Mental health for adolescents. U.S. Department of Health and Human Services. Retrieved from https://opa.hhs.gov/adolescent-health/mental-health-adolescents
  30. Organisation for Economic Co-operation and Development. (2025). Promoting good mental health in children and young adults. OECD Policy Paper. Retrieved from https://www.oecd.org/content/dam/oecd/en/publications/reports/2025/04/promoting-good-mental-health-in-children-and-young-adults_5da8fc0f/ebb8aa47-en.pdf
  31. Racine, N., McArthur, B.A., Cooke, J.E., et al. (2021). Global prevalence of depressive and anxiety symptoms in children and adolescents during COVID-19: A meta-analysis. JAMA Pediatrics, 175(11), 1142–1150. https://doi.org/10.1001/jamapediatrics.2021.2482
  32. Resiliency Technologies. (2025). Digital therapeutic interventions for adolescent mental health: Real-world implementation outcomes. White Paper. Retrieved from https://www.sharpenminds.com/post/sharpen-digital-therapeutic-interventions-for-adolescent-mental-health
  33. Sandstrom, A., Perroud, N., Alda, M., et al. (2024). A nationwide study on time spent on social media and self-harm among adolescents. Nature Scientific Reports, 13, 19471. https://doi.org/10.1038/s41598-023-46370-y
  34. Sandstrom, A., Sahm, L., Uher, R., & Pavlova, B. (2023). Anxiety and depression from age 3 to 8 years in children with and without ADHD symptoms. Scientific Reports, 13, 15647. https://doi.org/10.1038/s41598-023-42412-7
  35. Sang, X., Hou, X., Long, N., & Mao, P. (2025). Advances in the application of digital cognitive behavioral therapy in adolescent mental health issue interventions. Zhong Nan Da Xue Xue Bao Yi Xue Ban, 50(9), 1568-1578.
  36. Sappenfield, O., Alberto, C., Minnaert, J., et al. (2024). Adolescent mental and behavioral health, 2023. National Survey of Children's Health Data Briefs [Internet]. Rockville (MD): Health Resources and Services Administration. Retrieved from https://www.ncbi.nlm.nih.gov/books/NBK608531/
  37. Shaw, K.A., Williams, S., Patrick, M.E., et al. (2025). Prevalence and early identification of autism spectrum disorder among children aged 4 and 8 years — Autism and Developmental Disabilities Monitoring Network, 16 sites, United States, 2022. MMWR Surveillance Summaries, 74(2), 1–25. DOI: https://dx.doi.org/10.15585/mmwr.ss7402a1
  38. Stallard, P., Myles, P., & Branson, A. (2014). The cognitive behaviour therapy scale for children and young people (CBTS-CYP): Development and psychometric properties. Behavioural and Cognitive Psychotherapy, 42(3), 269-282. https://doi.org/10.1017/S135246581300115X
  39. Substance Abuse and Mental Health Services Administration. (2024). 2023 National Survey on Drug Use and Health (NSDUH). Retrieved from https://www.samhsa.gov/data/report/2023-nsduh-annual-national-report
  40. The Annie E. Casey Foundation. (2024). Youth mental health statistics in 2024. Retrieved from https://www.aecf.org/blog/youth-mental-health-statistics
  41. Tomopoulos, S., & Greenblatt, J. (2024). Integrated behavioral health care as a means of addressing common behavioral health concerns within pediatric primary care. Current Problems in Pediatric and Adolescent Health Care, 54(12), 101715. https://doi.org/10.1016/j.cppeds.2024.101715
  42. U.S. Surgeon General. (2021). Protecting youth mental health: The U.S. Surgeon General's advisory. U.S. Department of Health and Human Services.
  43. UNICEF. (2023). From the margins to the mainstream: Global report on children with developmental disabilities. New York: United Nations Children's Fund.
  44. Wang, S., Stewart, T.M., Ozen, I., et al. (2025). Rates of depression in children and adolescents with ADHD: A systematic review and meta-analysis. Journal of Attention Disorders, 29(3), 234-251. https://doi.org/10.1177/10870547251341597
  45. World Health Organization. (2024). Mental health of adolescents. Retrieved from https://www.who.int/news-room/fact-sheets/detail/adolescent-mental-health
  46. Zablotsky, B., Black, L.I., Maenner, M.J., et al. (2023). Diagnosed developmental disabilities in children aged 3–17 years: United States, 2019–2021. NCHS Data Brief, no 473. Hyattsville, MD: National Center for Health Statistics. DOI: https://dx.doi.org/10.15585/nchs.data.databriefs.db473
  47. Zhang, Y., Wang, J., & Li, Q. (2023). Prevalence and trends of developmental disabilities among US children and adolescents aged 3 to 17 years, 2018–2021. Scientific Reports, 13, 17234. https://doi.org/10.1038/s41598-023-44472-1
  48. Zhou, X., Li, R., Cheng, P., et al. (2024). Global burden of self-harm and interpersonal violence and influencing factors study 1990-2019: Analysis of the global burden of disease study. BMC Public Health, 24, 1035. https://doi.org/10.1186/s12889-024-18151-3