It is characterized by inflammation of the eyelid margins. Blepharitis
usually causes redness of the eyes and
irritation of the eyelids in both eyes.
Seborrheic blepharitis, the most common type of blepharitis, is usually one part of the spectrum of seborrheic dermatitis seborrhea which involves the scalp, lashes, eyebrows, nasolabial folds and ears.
The most common type of blepharitis is often found in people with a rosacea skin type.