You might want to put your food away for this one. Autophagia refers to the condition of eating yourself, or parts of yourself—often by simply biting and chewing impulsively. This disorder doesn’t have an official place of its own in the DSM-IV, but it would fit in with impulse control disorders in general. One man apparently began by merely biting his own nails—but ended up with such a problem that he severely mutilated his fingers. As with most disorders, this one can range from very mild to life threatening.

You might dont wanna see the picture *shudders* but still here it is .....