A canker sore—a painful white ulcer inside the mouth—might be brought on by stress. Or the wrong toothpaste. Or certain foods: tomatoes, peanuts, cinnamon. Or an iron deficiency. Or an allergy. Or a ...

Q: What causes canker sores? Why would I have a sudden outbreak of them in my mouth? A: There are several theories about what leads to canker sores, those painful ulcers that form inside the mouth, on ...

The sudden appearance of a mouth lesion can raise concern, often leading to questions about its cause. While many may dismiss these small sores as harmless, recurring or persistent lesions may be an ...

That seemingly harmless rash inside your mouth could be trying to tell you something important about your health. While most people dismiss oral irritations as minor nuisances, medical experts caution ...

A vitamin B12 deficiency can cause a burning mouth, red tongue, and dry lips. Knowing the signals can help you know when to ...

Mouth sores that do not heal within two weeks may indicate oral cancer or precancerous conditions and need prompt medical evaluation.

Canker sores are painful ulcers that form inside the mouth. Most people get their first canker sore during their teenage years. About 2–4 canker sores can develop at the same time. Approximately 1 in ...

As mouth ulcers heal, their whitish color will fade, and any surrounding redness will start to go away. You’ll also feel less pain and burning. This could happen over 1–4 weeks. Mouth ulcers are sores ...

It’s not uncommon to experience a scratchy, irritated, sore throat after going to the dentist. While there are numerous potential causes, most cases resolve on their own. A sore throat may be related ...

Gastroesophageal reflux disease (GERD) may affect the tongue. Symptoms include a burning feeling in the mouth, bad breath, and tooth decay. Laryngopharyngeal reflux is the medical term for acid that ...

Medically reviewed by William Truswell, MD Cold sores are contagious and spread through contact, such as kissing and sharing ...

A chronic sore throat lasts for more than 10 days and doesn't go away on its own. While most sore throats are caused by a bacterial or viral infection, a chronic sore throat may have other causes.