Definitions for "HPPD"
Hallucinogen persisting perception disorder; the spontaneous and sometimes continuous recurrence of perceptual effects of LSD long after an individual has ingested the drug.
Short for "hallucinogen persisting perception disorder," which is the medical term for flashbacks.
Hours Per Patient Day. Term used to show hours of nursing staff per patient per day on inpatient care units. HPPD may change from day to day, based on intensity of patient needs, numbers of patients on a ward, average number of admissions/discharges and any other factors that impact the amount of direct care staff needed to provide safe and effective care to patients in hospitals.