Attention deficit hyperactivity disorder is a behavioral condition characterized by distractibility, impulsivity, and/or hyperactivity. Although there is no single cause for ADHD, there are a number of biological and social factors ...

Psychotic disorders include schizophrenia and a number of lesser-known disorders. The number of people who develop a psychotic disorder tends to vary depending on the country, age, and gender of the sufferer, as well as on the speci...

Schizophrenia is a chronic, severe, debilitating mental illness that affects about 1% of the population, more than 2 million people in the United States alone. With the sudden onset of severe psychotic symptoms, the individual is sa...