chemical substances that can alter arousal, mood, thinking, sensation, and perception.
~ depressants (depress/inhibit brain activity)
~ opiates (morphine agonist; painkillers/euphoria)
~ stimulants (stimulate/exite brain activity)
~psychedelic drugs (distort sensory perceptions)
a physiological need for a drug, marked by unpleasant withdrawal symptoms when the drug is discontinued
unpleasant physical or psychological effects following discontinued use of a drug, can include shakes or tremors, vomiting, blood pressure/heart rate changes
drug rebound effect
withdrawal from a drug makes you manifest the opposite symptoms that the drug produced.
the ingestion of a drug to the extent that it impairs the user's biological or psychological well-being.
the most frequently used and abused CNS depressant in most cultures; its use affects mood, judgment, cognition
drugs that depress the activity of the central nervous system, reducing anxiety but impairing memory and judgment
~natural (opium, morphine, codeine)
~synthetic (heroin, methadone, oxycontin)
opiates mimic endorphins, reduces brains perception of pain.
drugs that stimulate neural activity, causing sped-up body functions and associated energy and mood changes.
a natural drug derived from the leaves of the coca plant. produces intense euphoria, mental alertness, and self-confidence
a synthetic stimulant and mild hallucinogen. Produces euphoria and social intimacy, but with short-term health risks and longer-term harm to serotonin-producing neurons and to mood and cognition.