If any of your skin tears are on or at the outside, try gently cleansing with a mild soap or hibiclens, rinsing with clear water, then gently dab the area with witch hazel. There may be some stinging, but it is goes away quickly. If I am extremely tender, I dry the area with a hair dryer. And sometimes tuck a fold of toilet tissue in the area to keep skin rub from irritating. Hope this helps.
BTW, I have had crohns since diagnosis in 1972. Lanacaine in a tube is the best I've found to use for itching and burning irritation.