I had back acne since my 20's.They get worse in summer and little better in winter.I am 25 now.Since last year this seems to spread to the back of my arm as given in the image I've posted in my profile.I have seen many docs,accutane didn't suite me.The appearance on these pimple/acnes are black and raised.They remain like that for years.I've changed my diet and that seems to help a little.But I am concerned what are those really? Acne/pimple/folliculitis?...one dermatologist said its acne and stuff.Have you seen this before?..thank you.
My medical history-- had tuberculosis and blood transfusion once.25 ,male,5'4,150 lb.