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Obsessive–compulsive disorder (OCD) is a mental and behavioral disorder in which a person has certain thoughts repeatedly (called 'obsessions') and/or feels the need to perform certain routines repeatedly (called 'compulsions') to an extent that generates distress or impairs general functioning. The person is unable to control either the thoughts or activities for more than a short period of time. Common compulsions include excessive hand washing, the counting of things, and checking to see if a door is locked. These activities occur to such a degree that the person's daily life is negatively affected, often taking up more than an hour a day. Most adults realize that the behaviors do not make sense. The condition is associated with tics, anxiety disorder, and an increased risk of suicide. [from Wikipedia]
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