Christian VII of Denmark suffered from a Chronic Masturbation Problem.
Well, he was a super rich, super powerful, and he got to sit around playing with himself all day long, so I’m not sure exactly how much he SUFFERED. However, his masturbation often interfered with his duties. He prioritized it over his job in many cases. He did it so much that the court physicians were actually worried that he would eventually render himself infertile.
Besides that problem, he also was often a bit of a jerk (pun absolutely intended). He would throw food at his dinner guests, and slap people in the face in the middle of a conversation for no apparent reason.