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Hi there,This is Dr Basu, experienced Internal Medicine Specialist.I am here to address your concerns and provide great service.
Viral infection can cause cough and also sinus inflammation.
The local nerve supplying the roof of mouth can be inflamed.
Numbness is a temporary thing.
Now there can be bacterial infection as well like atypical pneumonia.
That should be checked out if cough is going on for more than 10 days,Best wishes,It was my pleasure to help you today.If I have answered all your questions, Please rate my response Excellent (click on the 5th star).Please bookmark my profile for fast, reliable and authentic answers!This is the link to my profile:http://www.justanswer.com/medical/expert-mysticdoc/