Ergotamine Abuse: Results of Ergotamine Discontinuation, With Special Reference To the Plasma Concentrations

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Abstract
Twenty-three patients suffering from continuous headache linked with habitual daily use of ergotamine tartrate were studied. Their headaches were classified clinically, and possible side effects of ergotamine medication, plasma levels of ergotamine, and occurrence of withdrawal symptoms after discontinuation of drug abuse were recorded. Seventeen of the patients were clinically diagnosed as suffering from “ergotamine headache”, and seven of them complained of coldness in the extremities. Plasma ergotamine levels were measured by using a radioimmunoassay. In almost half of the patients the 1 h plasma levels after the daily dose were below the detection limit of the procedure (0.12 ng/ml). The duration and severity of the withdrawal symptoms did not correlate with the doses and plasma levels of ergotamine. In only 4 of the 21 patients who were followed up for 3 to 6 months did headache symptoms not improve after ergotamine withdrawal. The results indicate that even small (0.5-1.0 mg/day) doses of ergotamine tartrate taken regularly may cause continuous headache symptoms and withdrawal symptoms after discontinuation.

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