Eosinophilic panniculitis is a panniculitis where the histologic sections show increased numbers of eosinophils. This may go unrecognized unless a biopsy is examined microscopically.
The clinical presentation depends on the cause, with localized conditions presenting as a nodule.
Most common causes:
(1) gnathostomiasis
(2) erythema nodosum
(3) leukocytosclastic vasculitis
Other causes include:
(1) arthropod bites
(2) bacterial cellulitis
(3) injection granuloma
(4) toxocariasis (visceral larva migrans)
(5) non-Hodgkin's lymphoma
(6) myelodysplastic syndrome
(7) allergic contact dermatitis
(8) eosinophilic cellulitis
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