When you leave your room to go to the library with your roommate, he goes back several times to make sure the door is locked. You have also noted that he cleans the room frequently even when it isn't dirty. These are symptoms of:

Question

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The symptoms described are characteristic of obsessive-compulsive disorder (OCD), which is characterized by intrusive and persistent thoughts (obsessions) that drive the individual to perform repetitive and ritualistic behaviors (compulsions). Checking behaviors like repeatedly checking if the door is locked and cleaning rituals are common compulsions in OCD. Generalized anxiety disorder (A) involves excessive and unrealistic worry about a variety of everyday events or activities. Agoraphobia (B) is the fear and avoidance of places or situations that may cause panic, helplessness, or embarrassment. Panic disorder (D) involves recurrent and unexpected panic attacks, which are sudden periods of intense fear or discomfort accompanied by physical symptoms.

When You Leave Your Room to Go to the Library