(HealthDay News) -- Red, itchy, teary or burning eyes can signal allergies, a condition that affects millions. But what causes allergies? The American College of Allergy, Asthma, & Immunology mentions these possible triggers: Pet dander Dust mites Mold Pollen, with common sources such as weeds, trees and grass. While not allergens themselves, things like cigarette smoke, diesel exhaust or perfumes can worsen existing symptoms.
(HealthDay News) -- Red, itchy, teary or burning eyes can signal allergies, a condition that affects millions. But what causes allergies? The American College of Allergy, Asthma, & Immunology mentions these possible triggers: Pet dander Dust mites Mold Pollen, with common sources such as weeds, trees and grass. While not allergens themselves, things like cigarette smoke, diesel exhaust or perfumes can worsen existing symptoms.