Centers for Disease Control and Prevention , the prevalence of ADHD is 4-5%. The report also found that ADHD occurs much more often in boys than girls, but the prevalence among adult men and women is about equal. The cause of ADHD is not known but experts suspect that it may be related to anatomic abnormalities in the brain, maternal smoking, exposure to toxins, and/or genetic factors.
ADHD is linked with emotional problems, higher rates of drug and alcohol abuse, and poor performance at school and work. Similarly, sleep problems are associated with mood disorders and intellectual impairment. Treating sleep problems in children and adults with ADHD may improve symptoms and quality of life. For information about treating ADHD and sleep problems associated with it, see " treatment" and " coping."
Reviewed by Ronald Chervin, MD, MS, and by Jodi Mindell, PhD.