Common risk factors in the development of<unk><unk><unk>  disorder (ADHD) are child abuse, infections of the central nervous system, epilepsy, and traumatic brain injury.
Attention-deficit hyperactivity disorder risk factors
Mental retardation risk factors
Hearing impairment risk factors
Asperger syndrome risk factors
Anxiety risk factors
Major depressive disorder risk factors
Psychosis risk factors
Post traumatic stress disorder risk factors