Introduction

Most lumps and swellings under the skin are harmless and can be left alone. However, see your GP ifyou develop anew lump or swelling so that the cause can be identified.

A painful lump or swelling that appears suddenly over a day or two may be caused by an injury or infection. It's likely to be an infection if the skin around the lumpis red and warm. Your GP can advise you about how to care for this.

Below are some of the most common reasons for an unexplained lump or swelling under the skin inthe following areas of the body:

This informationshould give you an idea about what your lump or swelling might be. However, don't use it to diagnose yourself with a condition. Always leave that to your doctor.

Content supplied by the NHS Website

Medically Reviewed by a doctor on 5 Jan 2017