What is a Chalazion?
A chalazion is a common eyelid condition that manifests as a painless lump or swelling. It occurs when a meibomian gland, located in the eyelid, becomes blocked. Unlike a stye, which is an infection of an eyelash follicle, a chalazion is a chronic inflammation that usually forms deeper within the eyelid. This condition can affect anyone but is more prevalent in individuals with certain risk factors.
Causes of Chalazion
Several factors can contribute to the development of a chalazion. Blocked meibomian glands are the primary cause. These glands secrete oils that form part of the tear film, and when they become blocked, a chalazion can form. Previous eye conditions, such as blepharitis or recurrent styes, can increase the likelihood of developing a chalazion. Additionally, poor eye hygiene, where the eyelids are not adequately cleaned, can lead to gland blockage. Certain skin conditions, like rosacea or seborrheic dermatitis, can also predispose individuals to chalazia.
Symptoms of Chalazion
While a chalazion is generally painless, it can cause noticeable symptoms. You might observe a small, localized swelling on the eyelid, often accompanied by mild redness around the affected area. Occasionally, a chalazion may become tender if it becomes inflamed. In some cases, large chalazia can press against the eyeball, causing blurred vision.
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