Have had a very unusual experience. The first time it happened I think I had just moved my hand and my middle knuckle stung a lot and a large bruise appeared instantly which lasted a day or so.
Today I was out shopping and was reaching in my bag when it happened again, didn't knock it or catch it, it stung like mad and again a bruise appeared over the whole of the knuckle and it's still there now!
Does anyone else have this? Thanks in advance.