Define blepharitis?

Blepharitis is a common eye condition characterized by inflammation of the eyelids. It typically affects the edges of the eyelids where the eyelashes grow. Blepharitis can be caused by various factors, including bacterial or fungal infections, allergies, or skin conditions such as seborrheic dermatitis. Symptoms of blepharitis may include redness, swelling, itching, a gritty or burning sensation in the eyes, crusting or flaking of the eyelids, and excessive tearing. Treatment usually involves maintaining good eyelid hygiene, such as regular cleaning and warm compresses, and in some cases, medication may be prescribed to manage the condition.