Obsessive-Compulsive Disorders share in common repetitive behaviors or mental acts that an individual feels compelled to perform.  Obsessive-Compulsive Disorder is a condition in which the patient experiences recurring obsessions or compulsions. Obsessions are repetitive unwanted thoughts, images, or impulses that are experienced as intrusive and upsetting. Compulsions are repetitive behaviors or thoughts which are done to reduce anxiety rather than for pleasure. An example of an obsession is the belief that one’s hands are dirty a minute or two after washing hands for a fourth or fifth time, and a compulsion would be the urge to wash one’s hands yet again. In order to make the diagnosis, the patient must engage in obsessions or compulsions an hour or more a day or have significant distress or impairment, and the patient recognizes that the obsessions or compulsions are unreasonable.

Body Dysmorphic Disorder is a condition in which the patient is significantly preoccupied with one or more imagined defects in appearance. The preoccupation far exceeds everyday concerns about appearance. These symptoms significantly interfere with academic, work, or social relationships.

Trichotillomania is a disorder in which the patient pulls their own hair out resulting in significant hair loss. The patient experiences increasing tension prior to the pulling of hair and relief or pleasure at the time of the act. These symptoms significantly interfere with academic, work, or social relationships and represent a decline from previous functioning.

Hoarding Disorder involves the chronic inability to throw away personal possessions even though they may have no value.  Individuals with this disorder may accumulate rooms full of worthless items and the disorder may be quite debilitating.

Excoriation (Skin-Picking) Disorder is a condition in which the person consistently picks at their own skin to the point that they create sores or lesions.  Individuals with this disorder may pick at skin anywhere on the body, but most commonly skin is picked on the arms, hands, and face.