Eosinophilia

Etiology

• Drug hypersensitivity
• Allergic state, eg, asthma, urticaria, atopic dermatitis
• Tissue invasion by parasites, eg, ascariasis, visceral larva migrans
• Other skin disorder, eg, pemphigoid, dermatitis herpetiformis
• Malignancy, especially lymphoma
• Connective tissue disease, eg, Churg-Strauss syndrome, polyarteritis nodosa, eosinophilic fasciitis
• Eosinophilic pulmonary syndrome
• Fungal infection, eg, coccidioidomycosis
• Idiopathic
• Other: adrenal insufficiency, cholesterol emboli, eosinophilic leukemia