ARV medication changed

Dear experts,
I am diagnosed hiv possitive 1month ago. My CD4 is 300, and doctor told me that it's time for my treatment. First, I was given the Cotrim 960mg/day. After 10days drinking, I have skin allergy as described in the prescription. After about 10days later treat the allergy with celestamine, my skin problem is completely gone. 5 days later, I started the ARV treatment. My formula are: Lamivudine combines Zidovudine; Efavirenz. After 8 days using, everything was ok. Only dizzy at night after I drank the second time. But suddenly day 9th, I have skin rash. The area of rash was hot but I didn't have fever. It's all over my chest, my arms and back and face, neck, red eyes sometimes. Doctor said I should stop the ARV treatment and wait until all the rash's gone, then he will find another formula for me. I would like to know, is there any kind of medicine in replacement for my sensitive skin, because I'm very easily get rash or kinds like that.
Thank you so much.