Abscesses in guinea pigs are an accumulation of pus. They can occur anywhere, including the skin, tissue around the eyes or lining of the mouth. A deeper abscess should be considered in guinea pigs that excessively groom or constantly scratch at the same area. The sudden moistening of fur with a thick creamy discharge that is usually smelly might indicate that a deep abscess has recently ruptured. If this is noted, seek veterinary attention as soon as possible so that any deep tissue damage can be treated and any infectious material that may still be present in the deeper tissues can be removed.
For more information, please read Abscesses in Guinea Pigs