Kugler, J. Neurologische Storungen nach Yogaubungen. [Neurologic disorders following yogaexercises]. Med Klin. (West Germany), 15 Sep 1972, 67(37):1195. [In German.] *[PubMed]

« As reviewed by West (1979) and Epstein and Lieff (1981) meditation may induce serious psychological side effects, including depersonalization, derealization andpsychotic symptoms like hallucinations as well as mood disturbances. A cultural-bound syndrome induced by Chinese meditation, called Qi-gong (Ng 1999), is included in DSM-IV as Qi-Qong Psychotic Reaction and describes an acute, time-limited episode characterized by dissociation, paranoid, or other psychotic or non-psychotic symptoms. The symptomatology of a meditation-related psychosis as described by Chan-Ob and Boonyanaruthee (1999), appears to show similarities with that of the so called ‘zykloide Psychosen’ or ‘bouffées délirantes’, of which the characteristics include among others confusion, pananxiety, mood swings and mood dystonic psychotic symptoms as well as an acute onset with a short duration and a complete remission. This type of psychosis is included in the ICD-10 as acute polymorphic psychotic disorder.”