Alma Frenkel

Clinical characteristics of individuals with schizophrenia and hallucinogen persisting perception disorder: a preliminary investigation.

Journal of dual diagnosis 2014 Shaul Lev-Ran, Daniel Feingold, Alma Frenkel et al.

An unusual side effect of hallucinogen use is the appearance of hallucinogen persisting perception disorder (HPPD). Despite high rates of prior hallucinogen use among individuals with schizophrenia, there are insufficient data on the clinical characteristics of individuals with co-occurring schizophrenia and HPPD. Twenty-six hospitalized patients with schizophrenia and prior LSD use (12 with...