H.I.V Itchy skin please help?

Ok so long story short i had unprotected sex with four guys and ive been having SEVERE dry skin all over my body including my scalp. Its been going on for like 4 or 5 months now.Ive also been getting rashes from where i itch it. I heard this is common with people with hiv and im freaking out. Its been 9 months since my last sexual encounter. Can i mentally be causing these skin problems?