of the mucous membranes. It also causes ulcers (small sores) that can bleed and produce pus that appears as rectal discharge.

When hemorrhoids become swollen, you may see a bloody discharge, but you’re also likely to feel pain upon relieving your bowels. Mucus in stool can sometimes be a symptom of colon cancer ...

A common myth is that green mucus is a tell-tale sign of a bacterial infection, but both viruses and bacteria can cause this color change. In fact, past research has found that nasal discharge ...