PSYB32H3 Lecture 9: PSYB32 Lecture 9
Document Summary
Drug creates pleasing experience, do more, become dependent. People usually stop the abuse when they are 30. Start to have family, responsibility, health concern, social and psychological factors. Must have 3 of the symptoms in the slide to be classified. Tolerance: larger dosage of substance is needed to produce the desirable effect, effect of drug become less if the usual amount is taken. When stop taking, body exhibits withdrawal symptoms, such as fatigue. Continue to use the substance to avoid withdrawal. Addiction is when both tolerance and withdrawal occur. Alcoholism is the 4th leading cause of disability. Delirium tremens: drop in blood alcohol level when one withdraws alcohol. 80-85% people who depend on alcohol also smoke. Prevalence of alcohol dependence is lower with 12. 5% lifetime and 3. 8% 12 months. Alcohol is biphasic, it acts as stimulant then depressant when blood alcohol decreases. Addictive: in period of withdrawal, nausea, muscle pain, fatigue, sweating result.
