red bumps on the back of my neck and down my back

Hello there. I have had these red bumps on the back of my neck and spread down to my upper back since January 2012. They are very itchy and there is no liquid oozing out or if squeezed any debris coming out like with acne. I saw my dermatologist in Febuary to discuss with her and she said it was acne even though I was put on accutane, during that time which cleared up my face nicely, but not my back. I have used stieva-A(0.025%)or an itch reliever cream like elocolm (0.1%)all given to me by my derm. I am running out of solutions. I also was diagnosed with hsv-2 in July 2011 and have been taking 1000mg a day of valtrex for the past 10 days to see if it would help. I asked my derm. if this could be herpes related and all she said is, "it could be if he was rubbing his affected area on the back of your neck". Also, I dont have bedbug (checked), dont own pets, and haven't been using any new shampoo or different detergent. Can someone please help me? Picture on profile.