PSYB32H3 Chapter Notes -Methamphetamine, Xerostomia, Binge Drinking

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9 Dec 2012
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The pathological use of substances falls into 2 categories: Substance dependence: characterized by dsm-iv-tr as presence of at least three of the following: Person develops tolerance, indicated by either larger doses of the substance being needed to produce the desired effect or the effects of the drug becoming markedly less if the usual amount is taken. Withdrawal symptoms (negative physical and psychological effects- develop when the person stops taking the substance or reduces the amount). An example of substance withdrawal is alcohol withdrawal commonly known as the delirium tremens. Person uses more of the substance or uses it for a longer time than intended. Person recognizes use of the substance; he/she may have tried to reduce usage but has been unable to do so. Much of the person"s time is spent in efforts to obtain the substance or recover from its effects.

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