Psychotic episodes associated Bath Salts are known to be intense, with one Louisiana man reportedly barricading himself in his attic with a rifle, yelling "I gotta kill the monsters before they kill all of us".
The use of amphetamine during strenuous physical activity is very dangerous, particularly when combined with alcohol, and athletes have died as a result.
When someone stops taking crystal meth they often experience long periods of sleep and increased appetite because most users go on a "run", taking drugs for one or more days in a row and don't sleep or eat.
Withdrawal from benzodiazepine drugs can mimic an anxiety attack.