Table 1 Etiologies of secondary eosinophilic colitis
Eosinophilic colitis not related to a eosinophilic disorder | Parasitosis | Low: Oxyurosis, Taeniasis, Trichocephalosis, Anguillulosis, Angiostrongylosis. High: Trichinosis, Toxocarosis, bilharziasis, Ascaridiosis, Ankylostomosis |
Drugs | Clozapine, carbamazepine, rifampicine, tacrolimus, gabapentine, pregabalin, sulphasalazine, non-steroidal anti-inflammatory, gold salts | |
Chronic inflammatory bowel diseases Ulcerative recto-colitis Crohn’s disease | Ulcerative recto-colitis Crohn’s disease | |
Autoimmune diseases | Scleroderma, Churg-Strauss syndrome, celiac disease, dermatitis herpetiformis, systemic lupus erythematosus, pemphigus, periarteritis nodosa, rheumatoid arthritis, psoriasis, sarcoidosis, Sjögren’s syndrome | |
Blood diseases Solid neoplasia | Hodgkin’s or non-Hodgkin’s lymphoma, some leukemias. Breast, liver, kidney and thyroid cancer | |
Allogeneic marrow transplantation Syndrome of Tolosa-Hunt | Headache, ophthalmoplegia, paralysis of cranial nerves | |
Eosinophilic colitis related to eosinophilic disorder Hyper-eosinophilic syndrome |  | Persistent elevation of eosinophilia (≥ 1500/mm3) for at least 6 months. No cause of secondary eosinophilia |