Addiction: Concepts and Definitions
Understanding the nature of addiction depends on understanding several related concepts. The following discussion explains and clarifies those concepts.
Abuse and Misuse
In everyday English, abuse is understood to mean practices that are in some way improper or cruel, as in the term "child abuse." As applied to drugs, however, the term is difficult to define and carries different meanings in different situations. Some drugs, such as morphine, have medical purposes. If they are used for other reasons, or in unnecessarily large quantities, then the term "drug abuse" is applied. Other substances, such as alcohol, are legal but do not serve
| SCHEDULE OF DRUGS BY POTENTIAL FOR ABUSE |
| DEA Schedule | Abuse Potential | Examples of Drugs Covered | Some of the Effects | Medical Use |
| I | highest | heroin, LSD, hashish, marijuana, methaqualone | unpredictable effects, severe psychological or physical dependence, or death | no accepted use; some are legal for limited research use only |
| II | high | morphine, PCP, cocaine, methadone, methamphetamine | may lead to severe psychological or physical dependence | accepted use with restrictions |
| III | medium | codeine with aspirin or Tylenol®, some barbiturates, anabolic steroids | may lead to moderate or low physical dependence or high psychological dependence | accepted use |
| IV | low | Darvon®, Talwin®, Equanil®, Valium®, Xanax® | may lead to limited physical or psychological dependence | accepted use |
| V | lowest | over-the-counter or prescription cough medicines with codeine | may lead to limited physical or psychological dependence | accepted use |
| SOURCE: Adapted from the Drug Enforcement Administration Drugs of Abuse (1996) and Schedules of Controlled Substances, revised as of April 1, 1998.
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Addiction: Concepts and Definitions from Drugs, Alcohol, and Tobacco. Copyright © 2001-2006 by Macmillan Reference USA, an imprint of the Gale Group. All rights reserved.
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