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Mucositis - Symptoms of mucositis

NHS Choices Medical Reference

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The symptoms of mucositis depend on whether your mouth or digestive system is affected.

Oral mucositis

The symptoms of oral mucositis usually begin five to 10 days after starting chemotherapy, or 14 days after starting radiotherapy.

The tissue inside your mouth will start to feel sore, as if you have burnt it by eating very hot food. It is also likely you will develop white patches or ulcers on the lining of your mouth and, in some cases, on your tongue and around your lips.

The ulcers can feel very painful and may make it difficult for you to eat, drink and talk. They may also bleed and become infected.

You may also have a dry mouth and a reduced sense of taste. These changes in your mouth may make it more difficult to speak. Relatives and friends may notice your breath smells bad.

The symptoms of oral mucositis should ease three to four weeks after your course of chemotherapy or radiotherapy has finished. However, it can take longer - around six to eight weeks - if you have had radiotherapy of your mouth.

Gastrointestinal mucositis

The symptoms of gastrointestinal mucositis are more common in people receiving chemotherapy, although they may also occur if you have had radiotherapy to treat cancer in your abdominal (tummy) or pelvic area.

The symptoms of gastrointestinal mucositis usually begin 14 days after you start your chemotherapy or radiotherapy. They can include:

Most of these symptoms will stop a few weeks after your treatment has finished, although occasionally the symptoms of diarrhoea can persist for several months after radiotherapy has finished.

Medical Review: October 24, 2012
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