from Medical topics
Published online by Cambridge University Press: 18 December 2014
The nature of the disorder
Drug misuse is a complex and multifaceted phenomenon which can be understood in terms of three dimensions: consumption behaviours, problems; and dependence. Although conceptually distinct, in reality these dimensions tend to be related (sometime closely) in a number of ways.
Opiates and stimulants (predominantly heroin and crack cocaine) are among the drugs most commonly used by people presenting for treatment, and dependence upon these drugs is the most common reason for treatment. However, the classification of drug problems by specific substance can be misleading. Most drug misusers who require treatment are heavy and problematic users of more than one drug (Gossop, 2001).
Multiple drug use may involve the concurrent or sequential use of different substances. Among the reasons for multiple drug use are:
drug enhancement (several drugs may be used at the same time to increase the desired effects)
modification of effect (e.g. to counteract the adverse or unwanted effects of one or more drugs as with cocaine and heroin used together so that either the heroin takes away some of the unpleasant overstimulation of the cocaine, or the stimulant offsets the sedation of the heroin)
substitution (taking a different drug as a substitute where the preferred drug is not available).
Assessment and setting treatment goals
Assessment is not an impersonal procedure to be completed prior to treatment. It is an important first stage of treatment. The therapist should use assessment as an opportunity to encourage the involvement of the drug user in their own recovery.
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