I have a strange question. My brother in law has been in and out of Rehab for Percocet, Oxy, Etc... He says he never does them anymore but he always is going to the Dr because of Boils. A friend of mine says that my brother in law is still using because Drinking and Percocet can cause boils. Is this true? I have goggled it but really didn't get a real answer. IF anyone could shed some light on this I would appreciate it.