Often stress: Stress, injury/ trauma (scratching the are with coarse or sharp food or utensil) lack of sleep can all bring on canker sores. If infrequent, try colgate orabase to protect the area and reduce pain. If frequent try using toothpaste without sodium lauryl sulfate. See your dentist.
Answered 8/18/2017
5.2k views
3 doctors weighed in across 3 answers
3 doctors weighed in across 2 answers
3 doctors weighed in across 2 answers
4 doctors weighed in across 3 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question