bite-like reaction with CLL

I can find references to bite-like reactions but no definite info or pictures. All of my Doctors were unfamiliar with the condition. I get what looks like a small bite that rapidly goes to a large red centered , very itchy, blotch larger than a nickel. It will last for about 2 weeks and leave a dark spot where it was. I had one biopsied and got no info other than it was negative. I have had about 6, a month or so apart on my waist, side, calf,ankle, penis,, and thigh. Most under clothing where it would be impossible for an insect to get. There is no open hole as a bite would have. My CLL is low , 20,000 WBC but I keep all records, and going back it started in 1995 when the increases started. I live in the desert where there are almost no flying insects and my house is sprayed with the best pesticide. Any links would be appreciated.