Psych Disorders-drugs

- Both have a depressing effect on the central nervous system

- Barbiturates- initial period of excitement that is followed by slurred speech and motor functions

• -Physical and psychological dependence
• -Three types of abuse:
• 1. chronic
• (prescriptions)
• 2. episodic
• (orally)
• 3. Intraveneous
• (injected)

• -Morphine and heroine (derived from morphine)
• 1) Natural synthetic substances that act on the body similarly to opium poppy
• - Heroin best known--referred to as narcotics - Natural Opiods: endorphins, dymorphins, and enkephalins

• 2) Intoxication- drowsiness and slurred speech, impairment
• -Both sedative and analgesic effects, that are short-acting.
• 3) Withdrawal- depressed mood, nausea, muscle aches, sweating, diarrhea, fever

• 1) Grown naturally from coco bush;
• - Local anesthetic and a stimulant to the central nervous system
• - Crack is synthesized from cocaine and is easily vaporized for inhalation.
• * Crack is a very effective gateway drug because it is cheap, effective, and produces dependence quickly.

• 2) Intoxication- abnormal heart beat, dilation of pupils, elevated blood pressure
• -Cocaine: intoxication starts with euphoria by stimulating release of dopamine.
• *Most derivative of dopamine…will really truly feel like orgasm
• 3) Withdrawal- fatigue, unpleasant dreams, increased appetite

• -Stimulant to the psychomotor senses; significant effects on cardiovascular and nervous system
• *Chemically different from cocaine but similar in their effect, by increasing sensitivity of the norepinephrine and dopamine receptors.
• -Intoxication: Suppresses appetite, improves mood, increases ability to concentrate and focus attention.

*Meth remains in the body longer and is less expensive than cocaine.

-Examples: speed, crystal meth-

• - Act on the central nervous system to produce alterations of consciousness
• * affect the sensory processing centers in the brain.
• - Change perception of both internal and external world
• - Dependence is less likely and withdrawal is not an issue, but long-term perceptual disorders occur.
• *Associated with onset of schizophrenia
• -Example: LSD & STP

• -Dissociative aesthetic: Makes person feel detached from their environment
• -Example: angel dust, crystal- swallowed, sniffed or injected

• - Volatile substances of organic solvents such as gasoline, glue, lighter fluid, paints
• - Virtually the only way to use these is by inhaling to get a high

• -Gives feelings of high- inappropriate laughter, grandiosity, lethargy and then impairment
• -Example: Marijuana,