http://en.wikipedia.org/wiki/Epidermodysplasia_verruciformis
This. Also, be advised if you try to search for pictures, it's disturbing.
Also, this http://en.wikipedia.org/wiki/Harlequin_type_ichthyosis
Again, viewer discretion is advised.
Not to mention metabolic diseases that can get you killed or give you irreversible brain damage if you spend a few hours without eating of if you eat a little too much protein or sugar, etc
This. Also, be advised if you try to search for pictures, it's disturbing.
Also, this http://en.wikipedia.org/wiki/Harlequin_type_ichthyosis
Again, viewer discretion is advised.
Not to mention metabolic diseases that can get you killed or give you irreversible brain damage if you spend a few hours without eating of if you eat a little too much protein or sugar, etc