From National Institute of Mental Health (NIMH)
The National Institute of Mental Health (NIMH) is part of the National Institutes of Health (NIH), a component of the U.S. Department of Health and Human Services.
What is Obsessive-Compulsive Disorder?
Obsessive-Compulsive Disorder, OCD, is an anxiety disorder and is characterized by recurrent, unwanted thoughts (obsessions) and/or repetitive behaviors (compulsions). Repetitive behaviors such as handwashing, counting, checking, or cleaning are often performed with the hope of preventing obsessive thoughts or making them go away. Performing these so-called rituals, however, provides only temporary relief, and not performing them markedly increases anxiety.
People with OCD may be plagued by persistent, unwelcome thoughts or images, or by the urgent need to engage in certain rituals. They may be obsessed with germs or dirt, and wash their hands over and over. They may be filled with doubt and feel the need to check things repeatedly.
Effective treatments for obsessive-compulsive disorder are available, and research is yielding new, improved therapies that can help most people with OCD and other anxiety disorders lead productive, fulfilling lives.