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Successful desensitization to fixed drug eruption: the presence of CD25+CD4+ T cells in the epidermis of fixed drug eruption lesions may be involved in the induction of desensitization



Successful desensitization to fixed drug eruption: the presence of CD25+CD4+ T cells in the epidermis of fixed drug eruption lesions may be involved in the induction of desensitization



Dermatology 209(1): 29-32



Background: Fixed drug eruption (FDE) is a distinct type of drug-induced eruption, in which intraepidermal CD8+ T cells in the lesional skin are the final effector cells in the epidermal injury of FDE. Desensitization is a unique approach for the management of drug eruption, which has been reported to be effective in treating FDE. However, the mechanisms underlying desensitization to FDE are quite unknown. Objective and Methods: We reported a case of successful desensitization to allopurinol-induced FDE. To clarify the mechanisms underlying desensitization to FDE, we examined the phenotype of T cells in the epidermis of FDE lesions before and after desensitization using flow cytometry. Results: The overwhelming majority of intraepidermal T cells in the FDE lesion before desensitization consisted of CD8+ T cells, whereas a significant number of CD25+CD4+ T cells were present in the epidermis of FDE lesions after desensitization. Conclusion: The presence of CD25+CD4+ T cells in the epidermis of FDE lesions may be involved in the induction of desensitization to FDE. Copyright (C) 2004 S. Karger AG, Basel.

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Accession: 012599186

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PMID: 15237264

DOI: 10.1159/000078583


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