Blepharitis is a common eyelid condition that causes inflammation along the edges of the eyelids. It can make the eyelids feel itchy, irritated, crusty, greasy, swollen, or gritty. Some people notice flakes around the eyelashes, burning, watery eyes, or sensitivity to light. Blepharitis is usually not dangerous, but it can be uncomfortable and persistent. It can also come and go over time. Because eyelid irritation can look similar to pink eye, allergies, dry eye, styes, chal