Mouth Ulcer or Oral Cancer? How to Tell the Difference

The rule that settles it: three weeks

Almost everyone gets mouth ulcers — from bites, braces, sharp teeth, spicy food, stress, or no reason at all. Ordinary ulcers hurt, look pale yellow or white with a red rim, and heal within ten to fourteen days. The rule that matters is simple: any ulcer, patch or lump in the mouth that has not healed in three weeks needs a doctor to look at it. Not another gel. Not another month. An examination.

What makes an ulcer suspicious

• 01It does not healOrdinary ulcers heal in under two weeks; a suspicious one persists past three
• 02It does not hurtCounter-intuitively, early cancers are often painless — pain is not the danger sign, persistence is
• 03The edges feel hardA firm, raised, rolled edge, unlike the soft rim of a normal ulcer
• 04It bleeds easilyOn touch, brushing or eating
• 05It sits with other signsA white or red patch, a neck lump, numbness, or loose teeth nearby

Who should be extra careful

Anyone who uses tobacco in any form — gutkha, khaini, pan masala with tobacco, cigarettes, bidis — carries a many-fold higher risk of oral cancer, and so does anyone who chews areca nut (supari) alone. For users, the three-week rule tightens to: get any persistent mouth change examined, and get an annual mouth check even with no symptoms. It takes minutes and it is free at our screening camps.

What happens when you get it checked

A specialist examines the ulcer and the neck. If it looks harmless, you leave reassured — most do. If it looks suspicious, a small biopsy under local anaesthesia settles the question in days. Caught early, oral cancer is one of the more curable cancers, often with a smaller operation and excellent recovery of speech and eating. The entire difference between the easy road and the hard one is usually the month someone waited.

Common questions