When your allergies start to bother you, why is that the top of the mouth starts to get itchy?
It is the nature of the immune system. The are swells and attacked by white blood cells. Swelling stimulates the nerve ends and cause the itching feeling. Nothing to worry about.
Just part of the allergies.
Because the sinuses are right above it. They swell and they drip.
happens to me all the time sore throat- stuffy nose- coughing- sniffles-wraps up