A sore, patch or lump inside the mouth is often caused by something other than cancer. Still, changes that persist deserve attention. Knowing what to look for can help you decide when to ask for professional advice; it cannot tell you what a symptom means.
What changes should you notice?
Mouth cancer can affect the lips, gums, tongue and the lining of the cheeks. The NHS lists possible signs including a mouth ulcer lasting more than three weeks, a red or white patch, a lump in the mouth or on the lip, persistent mouth pain, difficulty swallowing or speaking, a hoarse voice that does not go away, or a lump in the neck or throat. Unexplained weight loss can also occur.
These symptoms are common and have many possible causes. Having one does not mean you have cancer. But do not try to diagnose a change by appearance alone, or assume it will resolve without advice if it persists.
When should you seek advice?
The NHS advises contacting a GP if an ulcer lasts longer than three weeks, or if you have a mouth or neck lump, a red or white patch, ongoing mouth pain, or difficulty swallowing or speaking. It also notes that a dentist can help assess ulcers, lumps, patches or mouth pain. If you are unsure where to start, contact a healthcare professional and explain what has changed and for how long. Mention whether it is getting bigger, bleeding, painful or affecting eating or speaking. Do not wait for a routine appointment if you feel acutely unwell; use appropriate urgent medical services.
A single short-lived ulcer is common and often clears in a week or two, but the NHS says an ulcer lasting more than three weeks should be checked. The important point is duration and change, not self-diagnosis. If a symptom goes away and returns, or you notice something new, ask for advice rather than relying on online images or home remedies. Read the NHS guidance on mouth ulcers for more information.
What happens at an appointment?
A GP or dentist will ask about your symptoms and relevant health history, then may look and feel inside your mouth and examine your jaw or neck. Further assessment or referral may be recommended if needed. A referral is a step to investigate a symptom; it is not a diagnosis of cancer. The NHS explains that these changes are often caused by other conditions, but checking them is sensible.
Ask a dentist in Clapham about a mouth change
If you are looking for a dentist in Clapham, SW11 Clinic’s public dental check-up information lists oral cancer screening among the examination elements. This does not replace asking for an assessment of a specific concern. To ask about an appointment, contact SW11 Clinic or call 020 7223 5114.
This article is for general information only; it is not a diagnosis or a substitute for advice from a qualified healthcare professional. Seek advice about persistent or concerning symptoms.