What could cause pimple like rash on back and arms?

Answer:
have you taken any new medication lately? especially a "generic" form? they contain fillers from china and India that can cause serious allergic reactions. i got the same thing on my back after taking generic wellbutrin (bupropion) to quit smoking. it was horrible. the itching darn near caused me to lose my mind and i'd scratch until i was bleeding. try some benadryl. that was the only thing that helped me - and it took several days of benadryl to get it under control.
First answer by ID1074878497. Last edit by Cbm. Contributor trust: 32 [recommend contributor recommended]. Question popularity: 5 [recommend question].