List of NDC products with proprietary name crotan. This medication is used to treat scabies. Scabies is a skin infection caused by mites that burrow into the skin. Irritation from the mites leads to severe itching and small bumps/blisters filled with fluid/pus. Crotamiton works by killing the mites that cause scabies. It also helps relieve itching related to scabies and other skin conditions. Crotamiton belongs to two classes of drugs: scabicides and antipruritics.