Long, strange trip: Some psychedelic drug users stuck with unwelcome highs

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.

Related Keywords

New York State Psychiatric Institute ,New York ,United States ,La Quinta ,California ,Texas ,Los Angeles ,Miami ,Florida ,Oakland ,Marina Del Rey ,Santa Rosa Mountains ,Yorba Linda ,American ,Henry Abraham ,Sara Ouimette ,Steven Locke ,Wesley Ryan ,Adonai Vargas ,Johns Hopkins ,Samuel Smith ,Carol Gilson ,Gina Ferazzi Los Angeles ,Harvard Medical School ,York State Psychiatric Institute ,Los Angeles Times ,Tribune Content Agency ,Connor Sheets ,Kool Aid Acid Test ,Wild West ,Statistical Manual ,Mental Disorders ,Persisting Perception Disorder ,Trip Doesn T ,American Psychiatric ,Will Higgins ,