Body Dysmorphic Disorder.
Jackson suffered from body dysmorphic disorder, a condition which makes the sufferer intensely critical of their perceived physical defects, unaware of what others think of them, secretive and depressed.
The common observer may not notice the acne, or the scar, or the wrinkle, the facial asymmetry, or the skin discoloration. But to the person with BDD, it may be all they think about. Experts have found that BDD patients spend anywhere from 3 to 8 hours a day working on ways to improve their appearance that depresses them. To try and compensate for their perceived “defect,” people with BDD possibly try a number of different routes which are to pick at their skin until it bleeds, try to camouflage their imperfections with make-up, check the mirror frequently, seek reassurance excessively, wear disguises, skip-out on social events, and the like.