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Hi. Welcome to JustAnswer. My name is Uzair.I am reviewing your post and will get back to your reply momentarily.
The symptoms can be due to evolving cold sore or an herpes infection. You need to wait and watch if fluid filled vesicles appear in a day or two the diagnosis can be confirmed. You need to see your PCP in latter case. For now increase your immunity eat well balanced diet and take lots of fluids.
Hope this helps.
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