What are mouth ulcers?
A person with mouth ulcers has crater-like sores on the surface of the mouth or lip. Mouth ulcers may be caused by injury, inflammation, or infection. Common causes of mouth ulcers include cold sores, gingivitis, and dentures.

What are the symptoms of mouth ulcers?
Symptoms of mouth ulcers include mouth or tongue sores, mouth pain, tongue pain, mouth swelling, tongue swelling, tongue redness, difficulty chewing, difficulty swallowing, fever, and swollen glands in the neck.

How does the doctor treat mouth ulcers?
The treatment for mouth ulcers depends on the underlying cause. Treatment for mouth ulcers may include mouth rinses, antiseptic mouthwash, saltwater gargles, antibiotics, antiviral medications, vitamin B12 supplements, and nonsteroidal anti-inflammatory medications for pain.