COMEDK 2007 MCQ Answer 150

The correct answer is B

Cocaine is called psychoactive because its actions modify the body’s normal synaptic transmission. Its euphoric high is the result of its action on the dopamine system (although its reinforcing qualities, while not yet completely understood, have recently been linked to serotonin as well).

The long-term effect is what is called “cocaine paranoia.” It is characterized by dysphoria, hallucinations, paranoid psychosis, extreme delusions, and irrational behavior. Also, many suffer from formication, or the hallucination that ants, insects, or snakes are crawling on or under the skin . Some people have actually bled to death trying to pick imaginary bugs out from under their skin, due to cocaine withdrawal .