Dual Disorders: Concepts and Definitions
Alcohol and Other Drug Abuse
- Significant impairment or distress resulting from use
- Failure to fulfill roles at work, home, or school
- Persistent use in physically hazardous situations
- Recurrent legal problems related to use
- Continued use despite interpersonal problems
Therefore, screening questions should relate to life problems that result from AOD use, taking into consideration that patients may not have the insight to perceive that their life problems are caused by AOD abuse.
The phrase AOD addiction (called “psychoactive substance dependence” in the DSM-III-R and “substance dependence” in the DSM-IV draft) is an often progressive process that typically includes the following aspects: 1) compulsion to acquire and use AODs and preoccupation with their acquisition and use, 2) loss of control over AOD use or AOD-induced behavior, 3) continued AOD use despite adverse consequences, 4) a tendency toward relapse following periods of abstinence, and 5) tolerance and/or withdrawal symptoms.
Alcohol and Other Drug Addiction or Dependence
- Pathologic, often progressive and chronic process
- Compulsion and preoccupation with obtaining a drug or drugs
- Loss of control over use or AOD-induced behavior
- Continued use despite adverse consequences
- Tendency for relapse after period of abstinence
- Increased tolerance and characteristic withdrawal (but not necessary or sufficient for diagnosis).
The DSM-III-R describes nine diagnostic criteria (shown in Exhibit 2-1), of which three or more must be present for a month or more to establish a diagnosis of dependence. Screening questions can be based on these criteria. The DSM-IV draft committee deleted DSM-III-R criterion 4 and the requirement of symptoms being present for at least 1 month. The DSM-IV draft emphasizes the symptoms of tolerance and withdrawal, which the draft committee placed at the top of the list of criteria.
In the DSM-III-R, criteria 1 and 2 deal with loss of control; criterion 3 addresses time involvement; criteria 4 and 5 relate to social dysfunction; criterion 6 relates to continued use despite adverse consequences;and criteria 7, 8, and 9 relate to the development of tolerance and withdrawal. It is important to note that tolerance, physiologic dependence, and withdrawal are neither necessary nor sufficient for the establishment of a diagnosis of AOD addiction.
The term AOD dependence can be confusing because it has multiple meanings. The DSM-III-R uses the phrase “psychoactive substance dependence” to describe the process of addiction, while many pharmacologists use the term “dependence” exclusively for describing the biologic aspects of physical tolerance and/or withdrawal. The American Society of Addiction Medicine describes drug dependence as having two possible components: 1) psychologic dependence and 2) physical dependence.
Psychologic dependence centers on the user’s need of a drug to reach a level of functioning or feeling of well-being. Because this term is particularly subjective and almost impossible to quantify, it is of limited usefulness in making a diagnosis.
Physical dependence refers to the issues of physiologic dependence, establishment of tolerance, and evidence of an abstinence syndrome or withdrawal upon cessation of AOD use. In this case, AOD type, volume, and chronicity are the important variables: Given a certain substance, the higher the dose and longer the period of consumption, the more likely is the development of tolerance, dependence, and subsequent withdrawal symptoms. Physical dependence and tolerance are best understood as two of many possible consequences (which may or may not include addiction and abuse) of chronic exposure to psychoactive substances.
Among patients with a psychiatric problem, any AOD use — whether abuse or not — can have adverse consequences. This is especially true for patients with severe psychiatric disorders and patients who are taking prescribed medications for psychiatric disorders. For patients with psychiatric disorders, the infrequent consumption of alcohol can lead to serious problems such as adverse medication interactions, decreased medication compliance, and AOD abuse. Screening questions can relate to evidence of any use of alcohol and other drugs, as well as frequency, dose, and duration.