These are painful sores on the linings of the cheeks and lips, tongue, or base of the gums. The cause of canker sores are idiopathic, meaning the cause is unknown. Most theories suggest it may involve a weakened immune system, trauma, allergies, and/or vitamin deficiencies. Treatment focuses on relieving symptoms. Warm saltwater rinses and bland diet help minimize discomfort. Anesthetic medication, over-the-counter agents, and steroid medication may expedite healing. Most canker sores clear up within two weeks without treatment.
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