Why Are My Eyes Watery?

* Allergies. Allergens such as pollen, dust, and pet dander can cause your eyes to water, itch, and turn red.

* Dry eyes. This condition occurs when your eyes don't make enough tears or the tears evaporate too quickly. Dry eyes can be caused by a number of factors, including aging, certain medical conditions, and some medications.

* Eye infection. Bacterial and viral infections of the eye can cause a variety of symptoms, including watery eyes, discharge, and pain.

* Blocked tear ducts. Blocked tear ducts prevent tears from draining properly, which can lead to watering eyes. Tear ducts can become blocked by a number of things, including infection, injury, and tumors.

* Other medical conditions. Some medical conditions, such as thyroid problems and lupus, can cause watery eyes.

* Certain medications. Some medications, such as birth control pills and antidepressants, can cause watery eyes as a side effect.