Neutrophilic eccrine hidradenitis in actinic reticuloid syndrome.

Neutrophilic eccrine hidradenitis (NEH) is a rare, transient complication, which usually occurs in patients with leukemia receiving various chemotherapeutic regimens. However, similar eruptions have been observed in other conditions, including HIV-positive patients, and are often preceded by the onset of malignancies. We report the first case of NEH arising in a patient with actinic reticuloid syndrome who had been treated with methotrexate.