I dunno if its got a name at all but I just made that one up. When I play 2D fighting games I use the middle of my thunb to press the buttons. As you have to press or as I do you swish your finger across the buttons quite fast. I know this sounds stupid but after A while my thumb began to hurt. 3 days ago I noticed I had a Rash in the middle of my Thumb. It really hurt and I was unable to play Guilty Gear X2 Reload for 2 days. I tried putting Suda-cream on it and so far it has worked. Anyone had this sort of thing happen to you ?