canker sores

Aphthae: Description Aphthae (also incorrectly spelled “aphthae” or “afts”) are painful lesions of the mucous membrane in the mouth. They can affect the gums, oral cavity, tonsils or tongue. Occasionally, aphthae also occur in the genital area. They can be round or oval, have a yellowish to grayish-white coating and are usually surrounded by an … Canker Sores: Causes, Frequency, and Tips