Methamphetamine psychosis: insights from the past

Area of Science:

• Neuroscience
• Psychiatry
• Pharmacology

Background:

• Early research explored amphetamine and methamphetamine psychosis before drug prohibition.
• Historical case reports and experimental studies provide insights into drug-induced psychosis.

Purpose of the Study:

• To review historical data on amphetamine and methamphetamine psychosis.
• To understand the nature and causes of methamphetamine psychosis.

Main Methods:

• Reviewed case reports and experimental studies from 1930s-1970s.
• Focused on studies involving prescription amphetamine use and misuse.
• Included experimental studies inducing psychosis in volunteers with amphetamines.

Main Results:

• High-dose amphetamine and methamphetamine can induce paranoid psychosis.
• Psychosis typically remits rapidly (within days) after cessation of drug use.
• Paranoia in a clear state of consciousness is a key feature, not requiring pre-existing schizophrenia and independent of sleep deprivation.

Conclusions:

• Paranoid psychosis is a likely outcome of high-dose methamphetamine use.
• Persistent psychotic symptoms post-intoxication suggest functional psychosis or latent vulnerability.