It often swells, sometimes affecting the entire eyelid.

Chalazion vs stye. Web a chalazion, like a sty, is a swelling within the eyelid caused by inflammation of an oil gland. Web certain characteristics can distinguish one from the other. Chat with a doctor today about your stye or chalazion.

The eye may water, become sensitive to bright light, and feel as though something is in it (foreign body sensation). Web in general, a stye is infected and a chalazion is not. One of 3 glands is typically infected:

Neither chalazia nor styes are harmful or serious. No diagnostic tests are required or useful in their diagnosis. These glands help keep the eye moist.

It is less tender but lasts longer. Chalazion symptoms a chalazion typically appears as a painless lump or swelling on your upper or. Bacterial infections usually cause styes.

Web the diagnosis of a stye (hordeolum) and chalazion requires only a history and physical exam. Web the key difference is that styes are infections, and chalazions are not. It can be hard to tell the two apart.

A stye is very painful. Web sometimes it can be difficult to tell the difference between a stye and a chalazion. Infection can cause a small “pus spot” at the tip of a stye (shown here) that looks like a pimple.