A dental expert has issued a warning that mouth ulcers which refuse to heal could signal something far more sinister, as oral and throat cancer cases surge nationwide. While cold weather, weakened immunity and stress can trigger more ulcers during winter months, any lesion persisting beyond two weeks demands immediate attention, according to Dr Andrej Bozic, oral surgeon at Dentum in Croatia, which caters to hundreds of British patients annually.
“Most ulcers are harmless and clear within a week or two,” he explained. “But if one persists, bleeds, or keeps coming back in the same spot, it’s a red flag that shouldn’t be dismissed.”
Why persistent ulcers pose serious risks
Whilst the majority of mouth ulcers stem from stress, friction or inadvertently biting the cheek, stubborn sores may occasionally indicate early-stage oral or throat cancer – particularly amongst smokers, heavy drinkers or those with HPV (human papillomavirus). These cancer rates are climbing sharply throughout the UK.
The Oral Health Foundation reports mouth cancer diagnoses have doubled over the past two decades, while HPV-linked throat cancers now rank amongst the fastest-rising cancer types, especially affecting men.
“These cancers often start small and painless,” Dr Bozic said. “You might not feel unwell, so the temptation is to wait and see if it heals. But catching it early makes all the difference.”
He highlighted that dentists and oral surgeons are often the first to identify early tissue changes – including white or red patches, ulcers that don’t heal, or thickened areas inside the mouth.
The warning signs to look for
Dr Bozic advises anyone to seek a check-up immediately if they notice:
- A mouth ulcer that lasts longer than two weeks
- A lump, patch or sore spot that keeps recurring in the same area
- Pain or difficulty swallowing
- A lump in the neck or under the jaw
“If you notice any of these symptoms, don’t wait for it to hurt,” he recommended. “Early detection gives the best chance of full recovery.”
Simple steps to stay safe
Dr Bozic stated that keeping up with regular six-monthly dental check-ups is one of the simplest ways to ensure early detection of serious conditions.
“Your dentist isn’t only checking for cavities,” he said. “We’re also trained to spot early signs of cancer, infections and other diseases that may first appear inside the mouth.”
He also suggests maintaining good oral hygiene, avoiding tobacco and limiting alcohol – both significant risk factors for oral and throat cancers – and ensuring HPV vaccination for young people.
“Most ulcers are nothing to worry about,” Dr Bozic added. “But if one refuses to heal, don’t wait. Getting it checked could save your life.”
