PSYB32H3 Chapter Notes - Chapter 12: Delirium Tremens, Substance Dependence, Physical Dependence
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the person develops tolerance, indicated by either (a) larger doses of the substance being needed to produce the desired affect or (b) the effects of the drug becoming markedly less if the usual amount is taken. withdrawal symptoms negative physical and physiological effects develop when the person stops taking the substance or reduces the amount; the person may also use the substance to relive or avoid withdrawal symptoms. the person uses more of the substance or uses it for a longer time than intended. the person recognizes excessive 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. substance use continues despite psychological or physical problems caused or exacerbated (worsened) by the drug (eg: smoking despite knowing that it increases the risk for cancer and cardiovascular disease)