<unk>  (from the Greek words "ὄνειρος" (oneiros, "dream") and "φρήν" (phrēn, "mind")) is a hallucinatory, dream-like state caused by several conditions such as prolonged sleep deprivation, sensory deprivation, or drugs (such as ibogaine).<unk>  is often confused with an acute case of schizophrenia due to the onset of hallucinations. The severity of this condition can range from derealization to complete hallucinations and delusions.<unk>  was described for the first time in the 1950s but was studied more in the 1960s. Although it is still cited in diagnostic manuals of psychiatry, such as DSM-IV and in the International Statistical Classification of Diseases and Related Health Problems (ICD),<unk>  as a separate entity is out of fashion nowadays.
Oneirophrenia
Paraphrenia
White piedra
Grisi siknis
Iatrosophia
Amastia
Steatopygia
Lipoatrophia semicircularis