Hallucinogen persisting perceptual disorder: a scoping review covering frequency, risk factors, prevention, and treatment
Expert Opinion on Drug Safety April 15, 2022 Marcus A. Doyle, Susan Ling, Leanna M.W. Lui et al. 24 citations
Hallucinogen persisting perception disorder (HPPD) is an uncommon but serious condition in which individuals repeatedly experience hallucinations and perceptual disturbances after prior hallucinogen use. As some hallucinogens are being developed to treat mental disorders, understanding HPPD becomes more important. A scoping review of the literature up to July 2021 covered treatments, prevalence, risk factors, and pathophysiology of HPPD. The renewed interest in psychedelics as potential treatments highlights the need to better characterize HPPD's frequency, risk and protective factors, key features, and clinical factors.