What is obsessive-compulsive disorder?
Obsessive-compulsive disorders are characterized by involuntary, recurring intrusive thoughts and/or ritualized, repetitive behaviors (e.g., checking, washing hands, ordering). The content of the thoughts and actions is predominantly seen by the affected person as meaningless or as not leading to a goal. About 3% of the population suffer from obsessive-compulsive disorder in their lifetime. This makes this disorder one of the most common mental illnesses.