Help me please with my OCD (NOT TROLLING)?

http://www.flickr.com/photos/radinfikri/7453774754/sizes/k/in/photostream/
I have a some type of disease which is is called "Obsessive Compulsive Disorder (OCD) " and I cannot stop drawing something really detailed and this is very annoying me. If a person commenting at my drawing I feel that I must to draw something really detailed and I don't know why. How to stop this since I can't force myself to stop to do so. I do that repetitive and I just break my pencil just to stop it.