Have you ever experienced the discomfort of waking up to find a painful bump on your eyelid? Chances are, it could be a stye – a common eye condition that, while bothersome, is typically harmless.

Medically reviewed by Johnstone M. Kim, MD Key Takeaways A swollen eyelid can be due to pink eye or allergies or a more serious condition like cellulitis or thyroid disease.If the swelling doesn't ...