Generalized anxiety disorder (GAD) is a pattern of frequent, constant worry and anxiety over many different activities and events.

Generalized anxiety disorder (GAD) is a common condition. The cause of GAD is not known, but biological and psychological factors play a role. Stressful life situations or behavior developed through learning may also contribute to GAD.

The disorder may start at any time in life, including childhood. Most people with the disorder report that they have been anxious for as long as they can remember. GAD occurs somewhat more often in women than in men.

The following symptoms are common in generalized anxiety disorder: Excess anxiety and worry that is out of proportion to the situation; difficulty controlling the worry; restlessness or feeling keyed up or “on the edge”; being easily tired; difficulty concentrating; irritability; muscle tension ; sleep disturbance (difficulty falling or staying asleep; or restless, unsatisfying sleep); excessive sweating, palpitations, shortness of breath, and stomach/intestinal symptoms.