These sores which keep recurring are called aphthous ulcers and are vey painful and unpleasant The cause is unknown.You can try Teejel and see if it helps to relieve the pain and discomfort. Your daughter may be getting migraine headaches but it is not possible to tell you that this is the diagnosis without more information.It would be best for her to be seen by her doctor so that a proper diagnosis can be made of her condition.
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