It also runs in my family. It is indeed nicknamed the
Vikings Disease as it’s mostly Norse and Scots ancestry
who have it. It goes to the Viking longships and the ever constant
gripping and rowing which would have mutated the genes.
Contributing agitators of the condition (increases development and
worsening) include heavy tobacco use (more than a pack per day)
alcohol addiction; underweight, occupations where hands are
continuously used in repetitive tasks; etc. It’s more so very
discomforting than painful. It’s treated by a day surgery. You can
go home afterwards, but can’t drive for a couple days afterwards.