Attention deficit hyperactivity disorder and comorbidity: A review of literature

Table 1 Summary of some key studies on comorbidity with attention deficit hyperactivity disorder in children and adolescents

Comorbidity with attention deficit hyperactivity disorder	Incidence (%)	Ref.
Autism spectrum disorder	59	Stevens et al[5]
Learning disorders	10-92 70	Biederman et al[9] Mayes et al[11]
Tic disorders	55	Freeman et al[12]
Depressive disorder	12-50	Angold et al[13]
Bipolar disorder	5-47	Galanter et al[18]
Anxiety disorders	15-35	Jensen et al[25]
Conduct disorder	3.5-10	Barkley et al[40]
Oppositional defiant disorder	30-50	August et al[37]