Aside from a vitamin B12 deficiency, glossitis can be associated with an allergy, infection, or injury to the tongue.
“Glossitis may change how you chew, swallow, or speak until it goes away,” it said.
Other warning signs of a vitamin B12 deficiency (as pointed out by the NHS) include:
- A pale yellow tinge to your skin
- Pins and needles (paraesthesia)
- Changes in the way that you walk and move around
- Disturbed vision
- Changes in the way you think, feel and behave
- A decline in your mental abilities, such as memory, understanding and judgement (dementia)
“See a GP if you’re experiencing symptoms of vitamin B12 deficiency,” the NHS recommended.