15 Signs And Symptoms Of Flu And How Long They Last

12. Watery Eyes

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Unknown to many, the eyes are connected to the nasal passage by way of the nasolacrimal duct which normally drain excess tears into the nose. When the nasolacrimal duct is blocked, tears well-up in the eyes, making them seem more-watery than usual. Inflammation and swelling of the nasal passages during a flu infection may block this drainage duct, which explains the watery eyes experienced by flu patients.

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