What are the risk factors for a sty?
Obstruction of the gland's opening can result from scar tissue following infections, burns, or trauma. Foreign substances such as makeup and dust can also clog the gland's opening if not properly washed away.
Sluggish outflow of the sebum from the meibomian glands is commonly seen in a chronic inflammatory condition called meibomian gland dysfunction (also commonly called meibomitis). Meibomian gland dysfunction is frequently associated with acne rosacea on the cheeks and nose, but it can also be seen alone.
What are sty symptoms and signs?
The first signs and symptoms of a sty are usually redness, tenderness, and pain in the affected area. The eye may feel irritated or "scratchy." Later signs and symptoms may include
- discomfort during blinking of the eye,
- watering of the eye
- sensitivity to light.
A common sign of a sty is a small, yellowish spot at the center of the bump that represents pus rising to the surface.