Pompholyx is a common eruption of small vesicles on the palms, soles, and/or lateral aspects of the fingers. It has a multifactorial etiology, including genetic determinants, allergy to metals, and id reaction; rarely it is a drug-related side effect. We report a paediatric case of pompholyx of the hands related to the intravenous immunoglobulin (IVIG) therapy for Clinically Isolated Syndrome (CIS). A to-year-old boy, received an IVIG therapy [Venital", Kedrion Spa, Italy) at a dose of 400 mg/kg daily for five days. The fifth day of IVIG infusion, a symmetrical vesicular eruption appeared on the palms of the hands and on lateral aspects of the fingers. The lesions improved with application of topical steroids in few days. The mechanism of induction of pompholyx by IVIG therapy is unknown. A review of the Literature suggests the hypothesis that dyshidrotic eczematous reactions may be related not only to the type of IVIG, to the dose and the rates of infusion, but also to an allergic response to excipients and preservatives contained in the drug, probably elicited by an underlying neurological disease in some cases.Pompholyx is a common, acute eruption of small (1-2 mm) vesicles on the palms, soles, and/or lateral aspects of the fingers, usually with a symmetrical distribution. It more often occurs in spring and fall, and generally has a self-limited course. Even if pathogenesis is not completely known, pompholyx has been regarded as a disease with a multifactorial etiology, including genetic determinants, allergy to metals, id reaction, and, rarely, it may be photoinduced or drug-induced (l, 2). Management of pompholyx needs to be adapted to etiology and includes local and systemic therapies, such as corticosteroids, calcineurin inhibitors, bexarotene gel, retinoids, and antihistamines (1).We report a paediatric case of pompholyx related to the IVIG therapy for Clinically Isolated Syndrome (CIS). CIS is the term to describe a neurological attack, lasting at least 24 h, characterized by optic neuritis, internuclear ophthalmoplegia, or partial myelitis, and it is associated with a major risk of developing multiple sclerosis (3).
Case historyA lO-year-old boy with acute onset of dizziness, diplopia, right eyelid ptosis, and divergent strabismus of the right eye was hospitalized in the Department of Paediatrics, Fondazione IRCCS Policlinico S. Matteo, Pavia, Italy. His past medical history was unremarkable. Viral serologic analyses for the detection of cytomegalovirus, Epstein virus and hepatitis virus were negative. Magnetic resonance imaging revealed findings suggestive