Rash issues?

Over a month ago I got an infection in my leg and was allergic to the antibiotics which caused my Leto turn purple and a rash to spread. The rash went away after taking all sorts of medicine and my leg got better. Now as of a week or so ago I have what looks like eczema on my arms, hands, thighs, and the back of my knees. I used a Neosporin cream for eczema and it was beginning to clear up, but now 3 days in its back to the way it was and my arm is a bit purple. I don't have health insurance and just want the itching to stop. It doesn't hurt; it's just terribly uncomfortable.