Why Do My Eyes Itch so Much During Allergy Season?

Your eyes itch during allergy season because airborne allergens trigger histamine release in your eye tissues. When pollen, dust, or mold spores contact your eyes, your immune system mistakes them as threats and releases histamine to fight them off. This histamine causes blood vessels in your eyes to dilate and become inflamed, leading to that characteristic itching, redness, and watering. Spring tree pollen affects over 25 million Americans, with oak, birch, and maple being common culprits. The conjunctiva, a thin membrane covering your eyes, contains numerous mast cells that release histamine when exposed to allergens. Wind can worsen symptoms by blowing more pollen directly into your eyes.

Related Questions

• What are the best eye drops for allergy-related itching?

• How can I prevent my eyes from itching during pollen season?

• Is it safe to rub my itchy eyes during allergy season?

• When should I see a doctor about itchy, watery eyes?

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