What is HPPD? Why psychedelic drug highs last years in some users Los Angeles Times

Content Article Menu How we reviewed this article: Understanding Hallucinogen Persisting Perception Disorder (HPPD) Treatment and Recovery Hallucinogen Persisting Perception Disorder Types Understanding Persistent Symptoms HPPD is still poorly understood, but research points to neurobiological changes in visual processing pathways in the brain—likely involving serotonin receptors (especially 5-HT2A). Although HPPD is primarily visual, many people […]