The longest, strangest trip: Some psychedelic drug users are stuck with unwelcome highs saratogian.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from saratogian.com Daily Mail and Mail on Sunday newspapers.
LSD and other hallucinogens have long been said to cause flashbacks for some heavy users, but hallucinogen persisting perception disorder, or HPPD, is a unique phenomenon.
LSD and other hallucinogens have long been said to cause flashbacks for some heavy users, but hallucinogen persisting perception disorder, or HPPD, is a unique phenomenon.
Some psychedelic drug users are stuck with unwelcome highs medicalxpress.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from medicalxpress.com Daily Mail and Mail on Sunday newspapers.
LSD and other hallucinogens have long been said to cause flashbacks for some heavy users, but hallucinogen persisting perception disorder, or HPPD, is a unique phenomenon.