When a stimulant-dependent individual abstains from stimulant use, withdrawal symptoms, including depression, fatigue, insomnia, and loss of appetite, reflects a drop in neurotransmitter levels in the brain.
There are some instances of individuals high have been high on LSD who attempt to walk through traffic while hallucinating; these incidents have resulted in numerous accidental injuries and cases of death.
Thousands of people choke on their own vomit each year while alcohol intoxicated.
Some of the behavioral effects in teens associated with abuse anabolic steroids include an increase in aggressive behavior, mood swings, and restlessness.