Also known as aphthous ulcers or canker sores, mouth ulcers are painful open sores inside the mouth. The exact cause of mouth ulcers is unknown, though a combination of factors may contribute, including minor mouth injuries, vitamin deficiencies, and stress.
The ulcer forms a small, pale pit, and the area around it may become swollen.
Most ulcers clear up by themselves within about 3 weeks.
Symptoms may be relieved by over-the-counter antiseptic mouthwashes, pain relievers, corticosteroid lozenges, or anesthetic gels.
A doctor or dentist should be consulted if an ulcer lasts for more than about 3 weeks or becomes more painful or red, or if ulcers keep recurring.

Othere related diseases

ESOPHAGITIS
Esophagitis is inflammation of the lining of the esophagus. There are two main types: reflux and corrosive.
Reflux esophagitis is due to leaking of stomac...

FOOD POISONING
Food poisoning is sudden illness caused by consuming food or drink contaminated with an infectious organism or toxin. Bacteria that can cause food poisoning inc...

GALLSTONES
Gallstones are hard masses formed from bile (a digestive juice produced by the liver) that occur in the gallbladder or bile ducts (tubes that carry bile from th...

GASTRITIS
Helicobacter pylori infection Inflammation of the stomach lining (gastritis) may occur due to infection or irritation. It may develop suddenly (acute) or be lon...

GASTROENTERITIS
Infective gastroenteritis Norovirus Gastroenteritis is inflammation of the stomach and intestines, typically causing the sudden onset of nausea, vomiting, diar...

GASTROESOPHAGEAL REFLUX DISEAS
Commonly known as acid reflux or dyspepsia, gastroesophageal reflux disease (GERD) is regurgitation of stomach acid into the esophagus, causing pain in the uppe...

GEOGRAPHIC TONGUE
In geographic tongue, there are irregular, raw, red patches with white borders on the tongue. The cause is unknown. This condition usually causes no symptoms, a...

GINGIVITIS
Gingivitis is inflammation of the gums, usually due to the build-up of plaque (a deposit of food particles, dead cells, saliva, and bacteria) as a result of poo...