You may apply some lubricating jelly over the orifice to reduce discomfort, if required. Some conditions where leaking anus is commonly seen are discussed below. This happens when your stools contain excess of fats in them. Hello, I am a 30 year old female with vulvar eczema. This is especially true if you are over age 40, when there is an increase in the risk of rectal bleeding from colorectal cancer and other serious digestive diseases. I've also cut out pretty much all dairy and wheat from my diet which did seem to help a little but not dramatically enough to have been the cause.