Body dysmorphic disorder, also called BDD, is an obsession with an imagined or minor flaw in one's looks. The affected person looks normal to others, but not to him or herself. BDD distresses the person and may impair social or work functioning.

What is going on in the body?

The symptoms usually appear when the person is 15 to 20 years old. A person with BDD may become totally preoccupied and obsessed with his or her body appearance. This obsession can take over the person's whole life.

What are the causes and risks of the condition?

There is no single clear cause for body dysmorphic disorder. Biological, psychological, and even social or cultural factors are thought to contribute.

The disorder is more common among women than men. Someone with this disorder is more likely to be single. He or she may have a history of depression, anxiety, or psychosis.