Link Banana

An interesting disease discussed at some length in a rather old (and good) episode of Bloggingheads:

 A striking feature of LNS is self-mutilating behaviors, characterized by lip and finger biting, that begin in the second year of life. Neurological symptoms include facial grimacing, involuntary writhing, and repetitive movements of the arms and legs similar to those seen in Huntington’s disease. The direct cause of the neurological abnormalities remains unknown. 

In the discussion, Richard Preston uses the more jarring name “self-cannibalism.”