What is the term for inflammation of the eyelids, usually caused by malfunctioning oil glands?

Blepharitis is the correct term for inflammation of the eyelids that often results from dysfunction of the oil glands associated with the eyelids, such as the meibomian glands. This inflammation can lead to irritation, scaling, and redness at the edges of the eyelids. Blepharitis commonly presents as a crusting along the lash line and can cause discomfort or a feeling of grittiness in the eyes.

Other conditions mentioned serve different purposes. A hordeolum, commonly known as a stye, refers to an infection of the sebaceous glands at the base of the eyelashes and typically presents as a painful lump on the eyelid. A chalazion, while also related to oil gland dysfunction, is usually a painless bump that occurs when a meibomian gland becomes blocked but does not involve the same inflammatory process. Ptosis refers to the drooping of the upper eyelid and is unrelated to inflammation of the eyelids.

Understanding blepharitis is crucial for recognizing symptoms and providing the correct patient care, including advising on proper hygiene and treatment options.