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Possible Lansoprazole-Induced Eosinophilic Syndrome

Authors: John G. Gums; Ku-Lang Chang; Jerry D Smith;

Possible Lansoprazole-Induced Eosinophilic Syndrome

Abstract

OBJECTIVE: To report a case of myalgia with eosinophilia related to lansoprazole administration. CASE SUMMARY: A 50-year-old white woman developed severe myalgia 1 week after starting lansoprazole. During the treatment course, the patient was also found to have eosinophilia. The myalgia and eosinophilia resolved 40 days after lansoprazole was stopped and 18 days after prednisone therapy was begun. The patient was not rechallenged with lansoprazole. DISCUSSION: To our knowledge, this is the first reported case of lansoprazole-induced eosinophilic syndrome. Clinically, it is difficult to distinguish between eosinophilia–myalgia syndrome and eosinophilic fasciitis, which are probably part of a continuum of eosinophilic disorders. This patient presented with symptoms of both syndromes. Although other causes cannot be completely ruled out, the time course strongly suggests that lansoprazole was the causative agent. CONCLUSIONS: It is important to consider medications when diagnosing patients with hypereosinophilia and/or myalgia. OBJETIVO: Informar un caso de mialgia con eosinofilia relacionado con la administración de lansoprazol. RESUMEN DEL CASO: Una mujer de 50 años desarrolló una mialgia severa 1 semana después de empezar terapia con lansoprazol. Además se encontró que diagnosticaba de eosinofilia. La mialgia y la eosinofilia se resolvieron 40 días después de detener la terapia con lansoprazol y 18 días después de empezar terapia con prednisona. No se le volvió a administrar lansoprazol a la paciente. DISCUSIÓN: Según nuestro conocimiento, este es el primer caso informado del síndrome de eosinofilia inducida por lansoprazol. Clínicamente, es difícil distinguir entre el síndrome de eosinofilia-mialgia y fascitis eosinofilica, las que probablemente forman parte de desórdenes eosinofílicos. El paciente presentaba síntomas similares a ambos síndromes. Aunque no se pueden eliminar otras causas, el curso clínico de este caso sugiere que lansoprazol era el agente causante. CONCLUSIONES: Es importante tomar en consideración los medicamentos cuando se diagnostican pacientes con hipereosinofilia y/o mialgia. OBJECTIF: Présenter un cas de myalgie avec éosinophile associée à l'administration de lansoprazole. RÉSUMÉ DU CAS: Une patiente de 50 ans, a développé des myalgies importantes 1 semaine après le début d'un traitement au lansoprazole. On a aussi découvert une éosinophilie chez cette patiente. Les myalgies et l'éosinophilie ont disparu 40 jours après l'arrêt du lansoprazole et 18 jours après le début d'un traitement à la prednisone. La patiente n'a pas été réexposée au lansoprazole. DISCUSSION: Ceci est le premier cas de syndrome d'éosinophilie induit par le lansoprazole rapporté dans la littérature. En clinique, il est difficile de distinguer entre un syndrome éosinophilie-myalgie et une fasciite à éosinophiles. Ces deux diagnostics faisant probablement partie d'un continuum de maladies touchant les éosinophiles. Cette patiente s'est présentée avec des symptômes compatibles avec les deux diagnostics. Bien que d'autres causes n'aient pas été complètement éliminées, l'évolution temporelle suggère fortement un lien de causalité avec le lansoprazole. CONCLUSIONS: Il demeure important de suspecter la médication lorsqu'on doit évaluer un patient qui se présente avec une hyperéosinophilie et/ou une myalgie.

Related Organizations
Keywords

Humans, Female, Lansoprazole, Middle Aged, Anti-Ulcer Agents, 2-Pyridinylmethylsulfinylbenzimidazoles, Omeprazole, Eosinophilia-Myalgia Syndrome

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
16
Average
Top 10%
Average
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