Dry mouth and loss of taste: what should you know?

Saliva dissolves flavour molecules so taste receptors can detect them. When the mouth feels sticky or dry, food may seem bland, and chewing or swallowing may be uncomfortable. A blocked or inflamed nose can also reduce the sense of flavour that comes from smell. A common cold or COVID-19 can present with loss of taste, while a change that continues after an infection may fit Long COVID. Medicines, mouth breathing, tobacco, dehydration, and some dental or oral problems are other possibilities. These symptoms do not identify one condition by themselves.

Sip water regularly and take small drinks with meals. Sugar-free gum or lozenges can stimulate saliva; avoid products with added sugar if your teeth are vulnerable. Use a gentle toothbrush and keep the mouth clean. Moist foods, sauces, and varied textures may make eating easier, but avoid very salty, spicy, or acidic foods if they sting. Do not stop a prescribed medicine without advice. Note when the change began, whether your nose is blocked, and whether you have fever, cough, mouth soreness, or reduced urine.

Arrange a medical review if taste does not return, dry mouth is persistent, swallowing is difficult, or you develop mouth sores, white patches, tooth pain, or repeated thirst and urination. Seek urgent help for trouble breathing, inability to swallow fluids, sudden neurological changes, or signs of severe dehydration. A clinician can examine your mouth and nose, review medicines, and decide whether testing or dental care is needed.

Could any of my medicines or health conditions be reducing saliva? Does my nose or mouth need examination? What can I use safely to ease dryness? Should I have a COVID-19 assessment or dental review?