recurring thoughts, beliefs, or ideas that dominate a person's mental content
acts performed repeatedly in a way that a person may realize is neither appropriate or useful
Obsessive Compulsive Disorder
the patient has distressing obsessions or compulsions that occupy so much time they interfere with accustomed routines
Body Dysmorphic Disorder
in response to a minuscule, sometimes invisible perceived flaw, the patient repeatedly checks in a mirror, asks for reassurance, or picks at a patch of skin, or makes mental comparisons with other people.
These patients are in the grip of something powerful: the overwhelming urge to accumulate stuff. They experience trouble and distress when trying to discard their possessions, even those that appear to have little sentimental value. As a result, things pile up, cluttering up living areas to render them unstable.
repeated pulling of the hair results in bald patches and attempts to control the behavior