Symptoms of CANKER SORES
Canker sores produce mouth ulcers that are small, shallow and very painful. They are usually covered by a gray membrane and their borders are surrounded by a halo. The can appear on the lips, gums, inner cheeks, tongue, palate and throat. During one attack, 2 or 3 ulcers usually appear. Sometimes, the number of ulcer can reach 15. All activities that involve the mouth, tongue and lips may be painful. Tingling or burning for 24 hours prior to the outbreak may give warning that a canker sore is about to appear.
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