Introduction: Lymphoid hypereosinophilic syndrome (HES) is a reactive HES, related to the presence of an abnormal circulating T cell clone. Cutaneous manifestations are frequent and sometimes inaugural, however few studies describe them specifically.
Case Report: We report the case of a 63-year old patient, in good general condition, with no previous history and taking no treatment, who was being followed for non-specific skin lesions. Blood and skin examinations showed hypereosinophilia, the presence of an aberrant CD3-CD4+ phenotype and a positive T-clonality test. There was no differential diagnosis or argument for a systemic lymphoma.
Conclusion: Cutaneous manifestations of lymphoid HES are variable, non-specific, and may differ according to lymphocyte phenotype. The discovery of SHE requires an extension workup and the risk of evolution towards a systemic lymphoma justifies a close surveillance. Treatment is adapted to the severity of the symptoms.
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