Systemic disorders | Vasculitis: Churg-Strauss syndrome or polyarteritis nodosa Connective tissue disease: scleroderma, dermatomyositis, eosinophilia-myalgia syndrome Others: idiopathic hypereosinophilia, mastocytosis, histocytosis X, nonlipid histiocytosis, eosinophilic granuloma |
Tumors | Carcinomas, lymphomas |
Intestinal | Inflammatory bowel disorders Intestinal perforation |
Food allergies | Cow milk enteropathy |
Parasites | Parasites (Ancylostoma caninum, giardiasis, strongyloidosis, other zoonoses) |
Toxins | Drugs (aspirin, sulfonamides, penicillin, cephalosporin, carbamazepine, azathioprine, l-tryptophan, and gold salts) |
Adapted from Ref. 2.