The edges of the eyelid (usually the lower) literally turn in so that the eyelashes rub against your eye surface. The eyelid may be turned inwards the entire time or it may turn in on blinking forcibly or tightly squeezing shut your eyelids.
Inflammation of eyelids is known as blepharitis. This condition is characterized by inflammation, redness, crusting, scaling of eyelids. It causes burning sensation, itching, foreign body sensation and dryness in the eyes.