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Health A-Z

What is burning mouth syndrome?

Burning mouth syndrome (BMS) is a burning sensation on your tongue, roof of your mouth or lips. It can happen anywhere in your mouth or throat. BMS often starts seemingly out of nowhere. It may feel like your tongue is being burned by a hot liquid like coffee.

People with BMS often report that the burning worsens throughout the day. Your mouth may feel OK when you wake up but develop a burning feeling later in the day. Once asleep, the pain may improve. The next day the cycle begins again.

A bitter or metallic taste often happens along with the burning feeling. Many people also feel a dry mouth despite having regular saliva flow. Sometimes, the burning is so severe that the chronic pain causes depression and anxiety.