An old headline from The Independent announces
Yes, it’s likely that Michelangelo suffered from gout, probably caused by lead poisoning. (Fortunately, his lead poisoning was not as severe as poor Beethoven’s.) For a better version, including pictures, see this.
Michelangelo worked all the time. He worked until 6 days before his death at almost 90 years old. But he wasn’t a “workaholic”! He was as productive as it gets.
A workaholic, according to Edwin Bliss, is “concerned with activities (staying busy) rather than achievements (getting things done)”. As I wrote in “Busy bee”
The laziest people are “busy bees” who distract themselves with frantic activity from the hard work of thinking, questioning and understanding.
Aside: The headline also calls him a “martyr”, probably because a common explanation for workaholism is a “martyr complex”. Of course, he wasn’t a martyr either.