Stomatitis on the tongue: does it occur and what does it look like

Sores in the mouth, including on the tongue, are common, and the word "stomatitis" comes up constantly in this context. We explain whether stomatitis occurs specifically on the tongue and under it, what it usually looks like, and when a doctor's examination stops being a formality.

What stomatitis is and whether it occurs on the tongue

Stomatitis is inflammation of the oral cavity and lips: the mucosa becomes red, and single or multiple ulcers appear. The tongue is a possible site: aphthae can appear on the tongue and under it, on the cheeks, lips, and in the back of the mouth. Stomatitis itself is not contagious, but the cause behind it is sometimes contagious — such as the herpes simplex virus.

What stomatitis looks like on the tongue and under the tongue

An aphtha is a round, painful sore with a white or beige fibrin coating in the center and a red halo around it. In the catarrhal form, the mucosa is swollen and reddened, there may be a white or yellow coating, dry mouth, excessive salivation, bleeding gums, and bad breath. In herpetic stomatitis, vesicles first appear, which rupture after about three days. Aphthae heal within 1–1.5 weeks without scars; ulcers from everyday injuries heal within one to two weeks. To assess the condition, the doctor looks at the appearance of the ulcers, their location, and how often they recur.

Why stomatitis appears on the tongue: causes

Single ulcers are more often associated with removable causes: biting, a sharp tooth edge, a rough filling, poorly fitting dentures or braces, burns from hot food, injury from a fish bone, irritation from toothpaste or a toothbrush, fatigue, and stress. There are also factors beyond a person's control: hormonal fluctuations, heredity, deficiency of iron, zinc, folic acid, vitamins B and D, and taking certain medications. Several ulcers at once raise suspicion of infection, lichen planus, intestinal diseases, or weakened immunity. According to statistics, 65% of older people with dentures suffer from stomatitis; local causes also include hygiene and gastrointestinal diseases.

How stomatitis differs from other changes on the tongue

Stomatitis is confused with herpes on the lips: the latter begins with tingling and burning, the rash runs along the edge of the lips and around the mouth, while aphthae are located inside — on the cheek or under the tongue. It is also distinguished from the white lacy pattern of lichen planus on the inner side of the cheeks. In ordinary stomatitis, the tissue around the ulcer looks healthy, and there are no general symptoms. A rash on the palms and soles, fever, joint pain and swelling, or changes on the skin or genitals indicate a different condition.

How a doctor determines the cause

Diagnosis begins with a conversation: how long ago the ulcers appeared, how often they recur, whether there was an injury, and what medications the person takes. Then comes an examination: the shape, size, and location of the ulcers, the condition of the surrounding tissue, and the coating. There are no specific tests for stomatitis itself; biopsy and culture are not used as routine methods. If the doctor suspects an underlying disease, they may refer the patient to another specialist. Whether such steps are needed is decided by the patient and the doctor.

When tongue sores require seeing a doctor

Timing is the guide. An ulcer that persists for more than three weeks requires examination by a dentist or general practitioner: a prolonged ulcer is sometimes a sign of oral cancer. A doctor should also be seen when an ulcer does not look like previous ones.

• the ulcer persists for more than three weeks;
• the ulcer is larger than usual or located closer to the back of the throat;
• bleeding, increased pain, and redness have appeared — infection is possible;
• there are simultaneously ulcers on the skin or genitals, joint pain and swelling;
• a child has many ulcers, fever rises, and general condition worsens.

Stomatitis on the tongue by itself is not a reason to call an ambulance. Numbers 103 and 112 are for a life-threatening condition (for example, difficulty breathing, loss of consciousness, severe bleeding that does not stop).

This material is for reference and does not replace a doctor's consultation: the final decision on management remains with the patient and their dentist.

This content is for reference and does not replace a doctor's consultation. Medical disclaimer