Metastatic Crohn’s Disease: An Approach to an Uncommon but Important Cutaneous Disorder

Table 1

Classification of cutaneous manifestations of Crohn’s disease.

Group	Type of lesions/diseases
(i) Direct extension from the bowel to the adjacent skin such as the perineal skin, stomal sites or lips [7]	(i) Fissures; (ii) Fistulas; (iii) Anal tags; (iv) Oral involvement
(ii) Dermatoses with a strong association with Crohn’s disease [2, 7, 8]	(i) Pyoderma gangrenosum; (ii) Erythema nodosum; (iii) Erythema multiforme; (iv) Epidermolysis bullosa acquisita; (v) Oral aphthae; (vi) Acrodermatitis enteropathica; (vii) Skin changes secondary to malabsorption; (viii) Psoriasis; (ix) Vitiligo; (x) Cutaneous polyarteritis nodosa
(iii) Skin lesions at sites noncontiguous to gastrointestinal tract [9]	(i) Metastatic Crohn’s disease