<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
What causes teary eyes?
<|assistant|>
Teary eyes, or epiphora, can be caused by a number of different conditions, including allergies, dry eye syndrome, exposure to irritants like smoke or strong odors, excessive crying, and inadequate drainage of tears. Other possible causes include an obstruction in the lacrimal duct, hormonal changes during pregnancy or menopause, certain medications, and certain systemic diseases. In some cases, no specific cause can be identified.