Factors affecting the development of spontaneous recurrence of methamphetamine psychosis

Acta Psychiatrica Scandinavica
K YuiS Ikemoto

Abstract

The process triggering spontaneous recurrences of methamphetamine (MAP) psychosis (i.e. flashbacks) was studied in 41 flashbackers, along with 84 non-flashbackers with a history of MAP psychosis. Plasma monoamine metabolite levels were assayed in 25 of the 41 flashbackers, 16 of the 84 non-flashbackers, 9 subjects with persistent MAP psychosis and 28 control subjects. All flashbackers had experienced threatening events or frightening paranoid-hallucinatory states during previous MAP use. The dominant factor triggering flashbacks was a mild fear of other people. Plasma norepinephrine levels were elevated during flashbacks. The results suggest that a mild fear of other people may have elicited memories of MAP psychosis associated with threatening experiences through increased sensitivity to psychosocial stressors. As a result the flashbacks occurred, including an increase in peripheral noradrenergic activity.

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