Wells syndrome is a rare disorder of unknown etiology. Precipitants include insect bites, infections, medications, malignancies, and vaccinations. Possible mechanisms include hypersensitivity reactions to antigens. There are four reports in the literature of Wells syndrome precipitated by vaccinations (hepatitis B vaccine, tetanus vaccine, tetanus-diptheria vaccine and triple antigen vaccine). We present a further case of Wells syndrome in a 22-month-old child after influenza vaccine as a novel trigger not previously reported.
Visceral leishmaniasis (VL) is a vector-borne disease caused by Leishmania donovani complex. Post-kala-azar dermal leishmaniasis (PKDL) is a rash that can occur following treatment for VL due to L. donovani species. We describe an unusual case of PKDL occurring during treatment for Leishmania infantum VL in a patient with human immunodeficiency virus-co infection.
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