Something has come up on the side of my left hand, it started of as little bumps.This is the 3rd time iv had this on the same hand in 5 years. It's more painful this time. It sometimes feels itchy and irritates me. It's semi hard under under the skin and red on the surface of the skin the the bubble (blister) on top. It will go really big (like when your fying an egg) and then pop but it's really uncomfortable.