Kleptomania is definitely a disease and can manifest with bipolar disorder, but is mostly seen as a symptom of OCD, and can be associated with traumatic brain injury. In any case it should be brought to the attention of his Psych. I'm biplor and have a hoarding compulsion which has left my house almost unlivable. These diseases are not of the rational mind and should not be used as excuses for antisocial behavior.........but they are real...........