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What are the most common causes of a sty?
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The most common causes of a stye include blocked oil glands, bacterial infection, and trauma to the eye. Blocked oil glands can occur due to an eyelash that rubs against the eyelid, excessive makeup or dirt in the eye, or certain medications. Bacterial infections may be caused by poor hygiene habits such as not washing your hands before touching your eyes. Trauma to the eye may occur from rubbing the eye with dirty hands or objects.