Sounds like Dupuytren's Contracture.Join the club.
I don't think it can "begin" from anything, but is hereditary. Something to with Viking genes.
Are you a beserker?
Can't get youtube at work, but i hope its' Sven the Berserker from "Erik the Viking".
My love for you is like a truck, BerserkerWould you like some making fuck, BerserkerMy love for you is like a rock, BerserkerThe Berserker is just so obsceneLikes evil people you know what I meanHe takes your soul and then just rips you apartHe'll steal your heartWould you like to smoke some pot, BerserkerMy love for you is ticking clock, BerserkerWould you like to suck my cock, BerserkerWould you like some making fuck, Berserker