OBSESSION	COMPULSION
recurrent and persistent thoughts, impulses, or images that cause distressing emotions such as anxiety or disgust. Many people with OCD recognize that the thoughts, impulses, or images are a product of their mind and are excessive or unreasonable. Yet these intrusive thoughts cannot be settled by logic or reasoning. Most people with OCD try to ignore or suppress such obsessions or offset them with some other thought or action.	repetitive behaviors or mental acts that a person feels driven to perform in response to an obsession. The behaviors are aimed at preventing or reducing distress or a feared situation. In the most severe cases, a constant repetition of rituals may fill the day, making a normal routine impossible. Compounding the anguish these rituals cause is the knowledge that the compulsions are irrational. Although the compulsion may bring some relief to the worry, the obsession returns and the cycle repeats over and over.
Fear of germs or contamination Unwanted forbidden or taboo thoughts involving sex, religion, or harm Aggressive thoughts towards others or self Having things symmetrical or in a perfect order	Excessive cleaning and/or handwashing Ordering and arranging things in a particular, precise way Repeatedly checking on things, such as repeatedly checking to see if the door is locked or that the oven is off Compulsive counting