Hi, Am wondering about a lump that has developed in the crook of my elbow, but is also now surrounded by many red itchy blisters (small) The lump itself is quite hard and fixed, about half the size of a golfball but is not at all painful. I was in Sri Lanka in June, and while my friends all suffered from many bites, I only got one: in this exact spot. There was no itching or pain at the time and I just ignored it. However the itching, since the little blisters have come, is intense. Any help would be appreciated.