Obsessive-compulsive disorder can be disabling without treatment. Learn more about when and how to seek professional help.

Researchers found differences in how brain regions work together during certain cognitive tasks, which may help clinicians ...

Obsessive-compulsive disorder (OCD), a disorder that involves rumination, can lead to paranoid thoughts and paranoia. OCD occurs when a person experiences a cycle of obsessive thoughts and urges ...

Have you ever sat in a boring meeting and wondered: "What if I just started shouting?" Or you're driving along and you think: "What if I crash?" These unsettling scenarios are known as "intrusive ...