Early signs of a stye include pain eye, eye redness, tenderness and swelling in the affected area. The swelling may be limited to the immediate area or spread to the entire eyelid. An advanced stye causes a small pimple. Other symptoms of a stye include watery eye, increased light sensitivity and a foreign body sensation.
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 swelling, discomfort during blinking of the eye, watering of the eye, and 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.