Generally corresponds to the exposed area. Follow clinician's advice on avoiding other irritants and protecting the skin. Patch test with other products as needed. Not uncommon in patients with active Crohn's disease in the distal bowel. Unroofing of ulcer by surgeon.
Management depends on size.
Review options with clinician, including non-adherent gauze, hydrogel, astringent solution or hydrocolloid wafer. Red open lesions become raised with irregular purplish margins. Unroofing the area is generally not advised. Topical therapy and pouching same as with abscess. Easily traumatized by removal of skin adhesives.