Individual body chemistry differs, so do manufacturer's formulas for skin barrier adhesives. If your adhesive is not giving you a good seal, ask for help in finding one that does. A poor seal may let urine leak onto the skin. If your pouch begins to leak, change it immediately. Some urostornates may have a high incidence of complications, some occurring after 10 to 12 years.
Most complications are gradual.
The most common is caused by an ill-fitting pouch. Urine that accumulates on the skin around the base of the stoma may become reddish brown, with raised, thick, leather-like areas. It is important to have a faceplate or pouch opening that fits to an eighth of an inch of the stoma to prevent this and other long-term complications. If the reddish brown growth is extremely bad, it may be treated with soaks of white vinegar three times a day for three or four days. Vitamin C, taken according to the directions on the bottle, may also be helpful to acidify the urine.