There are varying causes for the occurrence of chalazion but are generally caused by a blockage or obstruction in a small oil producing gland in the eyelid. The glands are responsible for lubricating the film of tears with oil. Oil flows from the gland through small circular openings that are present behind the lashes of the upper and lower eyelids.
When the oil becomes too thick, it can’t pass through these small openings and gets clogged up. Eventually it builds up resulting in a lump forming in the eyelid. This is known as a chalazion.
They can occur seemingly out of nowhere but they can also happen after a stye as they are a secondary type of inflammation. Children who suffer from recurrent styes are often prone to chalazion.
Blepharitis is a condition that affects the eyelids and it can also cause chalazion.
Learn more about diagnosing chalazion.
