I take a number of drugs and have developed a body rash and itching. The medications are as follows: Bisoprolol Fumarate, Clopidogrel, Eliquis, Gabapentin, Loratadine, Colchicine, Allopurinol, Enablex, Fenofibrate, Atorvastatin, and Famotidine, Which one may be causing the itching?