Anxiety: A Very Short Introduction explains what anxiety is, why it is a normal and vital part of our emotional life, and the factors that cause it. Are we born with fears or do we learn them? What purpose does anxiety serve? How can we treat anxiety disorders? What's happening in our brain when we feel fear? Insights are drawn from psychology, neuroscience, genetics, epidemiology, and clinical trials. The six main anxiety disorders are: phobias; panic disorder and agoraphobia; social anxiety; generalized anxiety disorder; obsessive-compulsive disorder; and post-traumatic stress disorder. The symptoms, prevalence, causes of each of these disorders, and the treatments for dealing with them, are covered.