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Case Reports in Medicine
Volume 2012, Article ID 703281, 4 pages
http://dx.doi.org/10.1155/2012/703281
Case Report

Complete Remission of Human Parvovirus B19 Associated Symptoms by Loxoprofen in Patients with Atopic Predispositions

1Department of Physiology I, Tohoku University Graduate School of Medicine, Seiryo-cho, Aoba-ku, Sendai, Miyagi 980-8575, Japan
2Department of Internal Medicine, Iwakiri Hospital, Miyagino-ku, Sendai, Miyagi 983-0821, Japan

Received 10 February 2012; Revised 14 March 2012; Accepted 16 March 2012

Academic Editor: Dierk Thomas

Copyright © 2012 Itsuro Kazama et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Two cases of women in their thirties with past histories of atopic dermatitis and allergic rhinitis developed a low grade fever, followed by a butterfly-shaped erythema, swelling of their fingers, and polyarthralgia. Despite such symptoms that overlap with those of systemic lupus erythematosus (SLE), the diagnostic criteria for SLE were not fulfilled. Due to positive results for human parvovirus B19 (HPV-B19) IgM antibodies in the serum, diagnoses of HPV-B19 infection were made in both cases. Although acetaminophen failed to improve their deteriorating symptoms, a nonsteroidal anti-inflammatory drug (NSAID), loxoprofen, completely removed the symptoms immediately after the administration. In those cases, since the patients were predisposed to atopic disorders, an increased immunological response based on the lymphocyte hypersensitivity was likely to be involved in the pathogenesis. The immunomodulatory property of NSAID was thought to repress such lymphocyte activity and thus provided a rapid and sustained remission of the disease.