Identifies the rates of incidence and essentials of diagnosis of Attention Deficit Hyperactivity Disorder. Discusses the issues and controversies in diagnosis of adult ADHD. Describes the clinical essentials of differential diagnosis of ADHD in adults and presentations of other disorders with similar core symptoms. Identiies medications (stimulants and non-stimulants) that may be used in pharmacological management of ADHD in the adult population. Discusses the recent developments in the field of non-stimulant medications for adult ADHD, including cholinergic drugs and atypical antidepressants.