Obsessive-compulsive disorder (OCD) is characterized by repetitive, unwanted, intrusive thoughts (obsessions) and irrational, excessive urges to do certain actions (compulsions).

It’s normal to feel your heart beat faster or your face flush before getting up to speak in front of a room of 50 people. But if you’re coming up with excuses to avoid the speaking engagement ...

Mood disorders include depressive disorders and bipolar disorders. These types of psychiatric disorders affect a person’s emotions and may cause severe lows, called depression, and highs, called mania ...

Bipolar disorder is a mental health condition that affects 4.4% of US adults at some point in their lives, according to the ...

Comorbidity is when a person has more than one health condition at once. Researchers investigating the comorbidity of personality disorders have found people with certain disorders may have other ...

“Mental disorders,” in stark contrast, are nominal or classificatory kinds: They are names or descriptions of clusters of ...