Many possibilities: Herpes, cankers, strep throat, flu, allergies are just a few possible explanations. You must visit a doctor and be examined to get an answer to this one. Good luck.
Answered 10/4/2016
5.3k views
3 doctors weighed in across 2 answers
3 doctors weighed in across 2 answers
5 doctors weighed in across 3 answers
3 doctors weighed in across 2 answers
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