How do I recognise an abscess in the mouth?

An abscess is a build-up of pus caused by a bacterial infection in the gums or jawbone. It presents as a painful, swollen area in the mouth. The pain is often throbbing and gets worse when the area is touched or when you chew. The spot may be red and sometimes shows a small white bump. Pressing on it can release pus or an unpleasant taste. A fever or swollen lymph nodes may indicate that the infection is spreading. An abscess needs prompt treatment to prevent it from spreading further. The dentist can drain the area or prescribe antibiotics. Underlying causes, such as an infection at the root tip, are investigated. Do not wait and see: an abscess always requires professional treatment.