Table 3. Coexistence of other conditions in individuals with ADHD.

Comorbid	Conditions
Genetic	Fragile X syndrome
	Klinefelter syndrome
	Neurofibromatosis I
	Inborn errors of metabolism
	22q11 deletion syndrome
Medical	Anemia
	Lead intoxication
	Fetal alcohol syndrome
	Tics
	Sleep apnea
	Seizure disorder
Psychiatric	Adjustment disorder
	Anxiety disorder
	Depressive disorder
	Oppositional defiant disorder
	Conduct disorder
	Substance use disorder
Neurodevelopmental	Autism spectrum disorder
	Learning disorders
	Intellectual disabilities
	Language disorders

ADHD, attention-deficit/hyperactivity disorder.