Attention-deficit/hyperactivity disorder (ADHD) is the most frequently diag
nosed childhood psychiatric disorder. Many children with ADHD continue to e
xhibit its symptoms of inattention, hyperactivity, and impulsivity as adult
s and require treatment throughout their life span. There are standard meas
ures and techniques available to evaluate children and adults for ADHD. Pha
rmacotherapy is highly effective in treating ADHD. Behavioral and psychosoc
ial intervention can also address symptoms and comorbid disorders for indiv
iduals with ADHD.