What condition is commonly associated with excessive tearing?

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Excessive tearing, or epiphora, is often associated with allergic conjunctivitis. This condition occurs when the eyes respond to allergens such as pollen, dust mites, or pet dander, leading to inflammation. The body's immune response triggers the release of histamines and other chemicals, which cause symptoms like redness, itching, and, importantly, increased tear production. In this context, the tears are produced in excess as a reaction to the irritants, serving as a means of flushing out allergens and providing relief.

While dry eye syndrome can lead to tearing, the mechanism involves a different pathway where the eyes become dry and reflexively produce more tears, which might not be sufficient. Blepharitis is an inflammation of the eyelids that can also lead to discomfort and sometimes tearing, but it doesn't directly cause excessive tearing as a primary symptom. Age-related macular degeneration primarily affects vision and is not directly related to tears.

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