Cannabis-associated psychosis with hypomanic features.
Lancet (London, England) December 18, 1982 D Rottanburg, A H Robins, O Ben-Arie et al.
Psychotic men with high urinary cannabinoid levels on admission showed more hypomania and agitation but less affective flattening, auditory hallucinations, incoherence of speech, and hysteria than matched cannabis-free controls. Clouding of consciousness was absent in most cannabis patients. After one week the cannabis group improved markedly, especially in psychotic syndromes, while controls remained virtually unchanged. Medication amounts did not differ between groups. High cannabis intake may relate to a rapidly resolving psychosis with marked hypomanic features, often presenting as schizophrenia-like illness.