Monday, July 18, 2011
Psychoactive Substance Misuse Disorders
Psychoactive Substance Misuse Disorders A. Psychopathology: ALCOHOL: Alcohol is a widely used recreational drug (even in our culture) because of its relaxing and disinhibiting effect. It is also an extremely common cause of physical and psychiatric morbidity. The psychiatric manifestation of alcohol use form the basis of this lecture, providing the conceptual framework of all substance related disorders. Mechanism of action: The biochemical action of alcohol is complex and only partly understood. It has a number of effects on various neurotransmitter system of the brain. The primary effects are thought to be stimulation of GABA receptors and inhibition of excitatory glutamate receptors, causing sedation, relief of anxiety, and
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