I have had this often occuring problem for years now. it s this big bump, the size of a dime, in the crease of my leg, where my crotch is. It s so painful when it happens, its hard to sit, walk, and squat. I ll get one on the right side, then a month or so later i ll get it on the left. I get told its a abscess , cyst , boil , risen, and i just don t know what to do about it. Sometimes if i can bare the pain i can mash it and a bunch of puss comes out followed by lots of blood . The bump will last for a week or two at a time.