Dilaudid belongs to a class of drugs called opioid painkillers. The semi-synthetic drug is derived from morphine. It works by altering the pain pathways in the body to relieve the pain. The drug produces euphoric effects that lead to its abuse by many people. A person who is taking the drug for medicinal purposes can also become dependent on it. The dependency to the drug can develop within two or three weeks. The physical and the psychological dependency develop fairly easily when Dilaudid is abused. The user can then no longer live without the drug. A decrease in the drug levels within the body will cause the appearance of withdrawal symptoms. It is not advised to quit or discontinue the drug without proper medical supervision. Intense withdrawal symptoms can develop that can be very uncomfortable for the patient. The doctors use certain medications to reduce the withdrawal symptoms.