I thought I was bitten by a mosquito, but got home and found that I had 4 quarter sized large red itchy razed welts on my lower buttock and a larger 1/2 dollar one with a smaller one next to it (about the size of a penny) on my right upper back thigh. I had been to the gym, showered put on shorts and walked home. (During this time, things started itching, hence the mosquito thought) The itching was BAD during the night and still itches now. Any help would be greatly appreciated.