Significance of pain in psychiatric hospital patients.

In a consecutive series of 227 psychiatric hospital admissions, data were recorded in respect of the complaint of pain. Eighty-six (38%) had pain. Fourty-four (19%) mentioned it spontaneously and 49 (22%) had no relevant physical cause. Women were affected more often than men (P less than 0.01) and tended to complain more often of severe pain (P less than 0.01). Severe pain was more often reported spontaneously (P less than 0.02). Also, the longer pain lasted the more likely the patient was to report it spontaneously (P less than 0.02). Men more often had a relevant physical diagnosis (P less than 0.05) and the low back was the commonest site of pain in them. Pain was relatively often associated with diagnoses of anxiety and personality disorder and relatively infrequently with schizophrenia, organic brain syndromes and transient situational disturbances. It is concluded that whilst there is a strong association between pain and psychiatric illness, this is less prominent, paradoxically, in some of the more severe psychiatric disturbances.