Because it is such an additive drug, many users report being unable to stop after just one use. Short-term as well as long-term effects can occur.
Behavior changes could include psychotic behavior, paranoia, aggression, anxiety, fatigue, depression, delusions, mood swings, confusion, insomnia, and hallucinations.
An amphetamine-induced psychotic disorder often mimics schizophrenia, because people with both conditions often experience auditory, visual, and tactile hallucinations.
Health dangers include stroke, brain damage similar to Alzheimer�s disease, weight loss, and death.

(For more information on methamphetamine psychosis, go to http://www.rnceus.com/meth/methpsych.html.)