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. 1974 Nov;180(5):773–779. doi: 10.1097/00000658-197411000-00011

Ergot Intoxication: Historical Review and Description of Unusual Clinical Manifestations

G Craig Merhoff, John M Porter
PMCID: PMC1343691  PMID: 4371616

Abstract

Clinical ergotism as seen today results almost exclusively from the excessive intake of ergotamine tartrate in the treatment of migraine headache. Although both gangrenous and convulsive symptoms are seen in naturally occurring ergotism resulting from the ingestion of fungus infected rye, only gangrenous ergotism has been reported following the excessive ingestion of ergotamine tartrate. The symptoms of both iatrogenic and naturally occurring ergotism appear to result from regional ischemia caused by ergot induced vasospasm. This report discribes experiences in the diagnosis and management of two patients with unusual manifestations of iatrogenic ergotism. One patient presented with ischemia of all extremities and bilateral foot drop probably due to ischemic damage to the common peroneal nerves, a finding not previously described in ergot intoxication. The foot drop totally resolved in several months following the discontinuation of ergot. A second patient presented with unilateral leg ischemia and transient monocular blindness, both of which resolved after discontinuation of ergot. Both patients displayed typical angiographic findings of ergotism. There is no convincing evidence that any treatment other than discontinuation of ergotamine is of benefit in the treatment of iatrogenic ergotism.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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