Congratulations on being UND.
You do not state which meds you are taking but I think you are on Interferon, Riba, and Incivek, if I recall correctly.
My advice is to get on top of the rash immediately. Treat it aggressively. The rash can and will snow ball quickly out of control. Some people have had to stop treatment due to their doctors not taking the rash seriously and not treating it aggressively. If your rash is anything other than a few bumps, over the counter medications are not going to control it. They simply are not strong enough. You will probably need prescription steroid creams and/or ointments and Hydroxyzine.
I used fluocinonide ointment for my body rash, hydrocortisone valerate cream for my face rash, and clobetesol solution for my scalp. Those were all topical prescriptions. They helped but they did not get the rash under control. It was not until I was taking 50 mg Hydroxyzine tablets orally every 6 hours (and still using the various steroid topicals) that the rash was brought under control. The longer you let it get worse, the longer it is going to take to get it under control. So, if I were you, I would ask my doc for prescription steroid creams and/or ointments and a high dose of Hydroxyzine orally. Many docs start with a very low dose (children's dose ... 10 mg) of Hydroxyzine and I do not know why. I guess they just have no clue waht they are doing. Anywa, 10 mg will probably do nothing. You need a high enough dose to control the rash. I would also recommend getting an urgent appt. with a dermatologist and let the dermatologist handle your rash. Hopefully the dermatologist will know how to treat it appropriately. I cannot stress enough how fast it can snow ball if you do not get those docs on board and treat it aggressively.
Here is a thread with many helpful posts about the rash. You will be able to see what others went through and what was ordered for them and how they dealt with it.
Best of luck.