Red, watery eyes, sneezing, runny nose, and nasal congestion are all signs of allergic rhinitis. Various allergens such as pollen, mold, animal dander, and dust mites set off an inflammatory reaction, leading to excess mucus production, watery, itchy eyes, coughing, sneezing, and nasal congestion. This condition is nearly identical to the common cold, but it appears more in the spring and fall and can be diagnosed by an allergist.

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