dxm made me really itchy, couldnt take it. but theres plenty of other better reasons to stay away from that drug. heard heroin's supposed to make you itch.
I cant say that i got any itching from crack,or coke really. Maybe they are ithcing coz they are aggitated. It sure made me aggitated and countless things more!
DXM causes me to itch pretty badly - the "robo itch" as they call it. My use of opiates is quite limited, but they too can cause itching.