We had this struggle and ended up needing to use the stuff they use for athletes feet because the loose stools would cause infections so bad he would say they hurt. Also you can try Vaseline as a barrier might help keep the skin dry. Teething also caused ours when the two year molars came in but no other time. It got bad enough the doctor tested a stool sample. Oh and the doctor said when it was really bad to wipe him and then use a blow dryer to keep everything really dry.
Reply to Mucus poops causing diaper rash. It’s like his 3rd one last 2 months maybe