I have red lesions on my thighs,front and back, behind the knees, a few on my hips, stomach and back. A few showed up 7 weeks ago and were very red and itchy. I thought I had been bitten by a spider. Now I have many more and my legs look like a case of red polka dots. The doctor at a medical clinic seemed puzzled but prescribed a steroid cream and said to see him in a week for a referral to a dermatologist if I was the same. After two days, the itch has gone but the lesions look the same. They are dry and have become larger over time. Do you know what these might be?