This document discusses anxiety disorders and provides information about their symptoms, types, causes, and treatment. It defines anxiety as a feeling of tension, worry, and physical changes. There are several types of anxiety disorders including generalized anxiety disorder, social anxiety disorder, panic disorder, and phobias. Symptoms can include physical signs like trembling, headaches, as well as psychological symptoms like feelings of dread. The causes of anxiety disorders may include genetics, brain chemistry, environmental stress, drug use, medical conditions, and childhood trauma. Treatment involves pharmacological interventions like benzodiazepines and SSRIs as well as psychological therapies such as cognitive behavioral therapy.