Although autumn is the beginning of the flu season, this is not the only reason. According to research data from the National Institutes of Health, autumn is the prime time for seasonal allergies.

Fall Trivia:Why do you run a runny nose in the fall?
Fall Trivia:Why do you run a runny nose in the fall?

Although the amount of pollen has decreased, the number of molds in the air has risen because the decaying leaves and vegetation are gradually decomposing.

Jay M. Portnoy, director of allergic asthma and immunology at Kansas City, Missouri, said that dry indoor air can irritate the inner wall of the nose, exacerbating the symptoms of the nose.

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