What causes chalazia?

What causes chalazia?

Chalazia may develop when something blocks a small oil gland in the eyelid. These glands help keep the eye moist. A blocked gland begins retaining oil and swells. Eventually, the fluid will drain, and you may have a hard lump on your eyelid.

Some additional causes of chalazia are:

• Rosacea (a skin condition that causes redness and acne).
• Chronic blepharitis, eyelid inflammation (redness, swelling and irritation).
• Seborrheic dermatitis (red, dry, flaky and itchy skin).
• Tuberculosis (TB).
• Viral infections.