PCP refers to Phencyclidine. Phencyclidine is a drug that was originally used as an anesthetic agent. Some people indulge in PCP abuse as a refuge from daily problems. Others use it to soothe themselves. Many also use it to get high as PCP can causes euphoria in a person, making him feel very happy and light. If you or a loved one are suffering from PCP abuse, this must-have guide includes treatment options and rehab facilities in the United States.