Blepharitis is the inflammation of the edge of the eyelids and often affects the part of the eyelid where the eyelashes grow. This condition typically occurs when microscopic oil glands near the base of the eyelashes become clogged, causing irritated and red eyes. Sometimes, blepharitis causes the formation of dandruff-like flakes at the base of eyelashes. Symptoms include watery and red eyes, irritated eyelid margins, redness, burning, and dryness. If left untreated, blepharitis can cause chronically-clogged glands, styes, and loss of eyelashes. Several diseases and conditions can cause blepharitis, and it is a chronic condition which requires long-term management.