Your last meal is usually to blame if there’s a bad taste lingering in your mouth — but it could also be a sign you’re sick. So if something’s sour — or stale or rotten or just otherwise gross — read ...

Some common causes of mouth infections can include oral thrush, herpes, and gingivitis. Treatment depends on the underlying cause but can include antibiotics, antivirals, or antifungals. Mouth ...

When the roof of your mouth hurts, it’s easy to assume you might have scraped or burned it while eating. But it turns out there are other culprits unrelated to a minor oral injury. Whatever the cause, ...