Common causes of tongue blisters
A burn is the most common cause. Hot tea, soup, pizza cheese or straight-from-the-pan food can scald the tongue, raise a blister and leave the surface rough and tender. Our guide on burnt tongue treatment covers care in detail.
Viruses are next. Herpes simplex causes clusters of small blisters that break into painful ulcers, and the herpetic ulcers guide describes how they behave. Hand, foot and mouth disease, mostly in children, gives blisters in the mouth with spots on the hands and feet, often with fever.
Allergy or irritation can blister the tongue after a food, a medicine or a dental product. Some ulcers start as a small blister before breaking open, and a blood blister can follow a bite.
What helps while it heals
Do not burst blisters, because the skin protects the raw tissue underneath. Rinse gently with plain or warm salt water, eat soft, cool or lukewarm food, and avoid spicy, salty, sour and hot food until it heals. Cold water, ice chips or curd can soothe. Stop tobacco and paan.
For pain, widely available paracetamol, taken as directed on the label, suits most adults. Ask a pharmacist or doctor first if you have liver disease, drink alcohol regularly or take other medicines. Anything for babies and children should come from the label or a clinician.
A dentist or doctor can advise on soothing gels if the pain stops you eating. Viral blisters pass by themselves, and the main aim is comfort and drinking enough fluids.
When to be seen
See a dentist or doctor if blisters keep coming back in the same place, are widespread, do not improve in about two weeks, or come with a high fever. Repeated blistering may point to a medical condition or a deficiency. Our guide on pimple-like bumps on the tongue helps tell small bumps from true blisters.
Any sore on the tongue that has not healed within three weeks needs examining, as the mouth ulcers page explains. Blisters with swelling of the lips or tongue, difficulty swallowing or breathing need same-day care, and a hospital emergency department if breathing or swallowing is affected.
Common questions
Should I pop a blister on my tongue?
No. The blister skin protects the raw tissue beneath, and bursting it invites pain and infection. Most burst by themselves. Rinse gently and stick to soft, cool food.
Are blisters on the tongue contagious?
Burn blisters and allergic ones are not. Viral blisters, such as herpes or hand, foot and mouth disease, can spread through saliva and close contact. Avoid sharing cups and kissing until they heal, and wash hands often.
How long do tongue blisters take to heal?
Most heal in one to two weeks. A burn blister usually settles faster. If a blister or sore lasts three weeks, have it examined.
Can stress cause blisters on the tongue?
Stress can bring on mouth ulcers and flare up herpes in people who carry the virus. It is a trigger rather than the root cause, so recurrent blisters still merit a check.
About this page
This page is general information, not a diagnosis or a quotation. Prices are prevailing Lucknow market ranges. Your own treatment and cost are determined after an examination. For questions about your own case, call +91 83036 12717.