The external clinical manifestations (psychopathology) and internal subjective experience (phenomenology) of catatonia are of clinical importance but have received little attention. This study aimed to use a large dataset to describe the clinical signs of catatonia; to assess whether these signs are associated with underlying diagnosis and prognosis; and to describe the phenomenology of...
Evidence for an association between cannabis use and psychosis continues to accumulate. A number of population-based longitudinal studies have found that cannabis use is associated with the later development of psychotic symptoms or psychotic diagnoses [1–6]. Studies of subjects with schizophrenia show associations between cannabis use and increased levels of positive symptoms [7,8] as well as...