How does an external stye generally present?

An external stye, also known as a hordeolum, typically presents as localized swelling on the eyelid, often accompanied by a pus-filled spot or accumulation, which is indicative of infection. The presence of a yellowish pustule at the site of the swelling is characteristic, showing the location of the blocked gland and inflammation. This condition is often a result of bacterial infection, commonly involving the oil glands located at the base of the eyelashes.

The features of pain and tenderness are usually present, as the area becomes inflamed due to the infection, leading to discomfort. The localized nature of the swelling helps to distinguish it from other conditions of the eyelid, where diffuse swelling may occur without a distinct pus-filled lesion.

While other answers might describe symptoms associated with different eyelid conditions, they do not accurately reflect the typical presentation of an external stye. The defining characteristics of an external stye, particularly the pus-filled spot and localized swelling, provide crucial information for recognizing and treating this common eyelid issue.