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Rapid Communication

Erythromelalgia associated with Clitocybe acromelalga intoxication

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Pages 451-454 | Received 16 Feb 2013, Accepted 01 Apr 2013, Published online: 03 May 2013
 

Abstract

Context. Erythromelalgia is a rare disorder characterized by reddening, severe burning pain, and swelling of the extremities. Food poisoning by Clitocybe acromelalga, a poisonous mushroom, is known to induce erythromelalgia; however, its treatment protocol remains unclear. We describe here three cases of erythromelalgia following the consumption of C. acromelalga with varying clinical courses. Case details. Of the three patients, the first patient presented 22 days after the onset of erythromelalgia; although he was treated with aspirin, numbness in the limbs persisted as sequela. Patient 2 presented at 3 days after the symptomatic onset and was immediately treated with high-dose intravenous nicotinic acid, with a dramatic symptomatic improvement. Patient 3, who had milder symptoms, spontaneously recovered within a week without any treatment. Discussion. The clinical manifestations and varying clinical courses associated with C. acromelalga toxicity are discussed here, with the pathogenesis of this mycotoxin and a potential treatment. Detailed interviews of such patients are important, particularly because of the remarkably slow course of this mycotoxin as compared with common food poisonings. Treatment with intravenous nicotinic acid was associated with improvement in one patient. We believe that this painful disorder might thus be treatable, although the mechanism underlying the treatment remains unclear.

Acknowledgements

The authors wish to thank Mr. Kenichi Shimazu, a member of the Japanese Society for Clinical Toxicology, for appraising the dried Clitocybe acromelalga specimens; Mr. Kentaro Hosaka, Department of Botany National Museum of Nature and Science, and Mr. Kazuo Odate, vice-president of the Saitama Mushroom Club, for giving us valuable comments for evaluation of the photograph of the dried mushroom; and Mr. Hiroaki Kasai, Akatsuka Botanic Garden, for introducing the specialists.

Declaration of interest

The authors report no declarations of interest. The authors alone are responsible for the content and writing of the paper.

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