Persistent auditory hallucinations and their relationship to delusions and mood.

Twelve patients who met DSM-III-R criteria for schizophrenia and had persistent auditory hallucinations completed a diary three times daily for 2 to 3 weeks. Using 5-point equal interval rating scales, nearly all patients were able to record consistently the nature of their hallucinations, the intensity of their delusional beliefs, and the mood and clarity of their thinking. For at least half the patients, there was a statistically significant relationship between the loudness and intrusiveness of hallucinations and the intensity of delusional beliefs; the more intrusive and distressing were the hallucinations, the more anxious and depressed were the patients. The findings suggested that more emphasis might be placed on altering patients' mood in the treatment of persistent hallucinations. The diary approach to research into auditory hallucinations appears promising.