I m a 20year old female..there is this skin problem i ve been suffering from the past 4 years or so.I ve acne on my upper arms and on my back..i ve shown it to many dermatolgists.i ve applied evry ointment and meds which they ve told me to but nothing has ever reduced the acne! my arms and backs are still covered with those acne marks which are like a little bit black in color..these spots never go! recently my dermatolgist told me to apply onabet shampoo before bath on the acne,aclind BP gel after bath and onabet cream the next morning on the affected area.I ve been following this regimen for the past 3 weeks and suddenly 3-4 days ago I ve developed heavy itching on my back and arms...is it some side effect of the medicine or something else? what should i do to stop the itching? should i discontinue the medicine o? or is it just because of the weather? its cold here. And please suggest any other medicine for my acne..because of these acne i cant even wear low back neck dresses anymore as i m afraid my acne will show.Please help.