Inflammation of the eyelids characterized by redness and swelling and dried crusts: "Blepharitis can exist in two forms, anterior and posterior."

"Anterior blepharitis affects the outside front of the eyelid, where the eyelashes are attached. The two most common causes of anterior blepharitis are bacteria (Staphylococcus) and scalp dandruff."

"Posterior blepharitis affects the inner eyelid (the moist part that makes contact with the eye) and is caused by problems with the oil (meibomian) glands in this part of the eyelid."

"Two skin disorders can cause this form of blepharitis: rosacea and seborrheic dermatitis of the scalp (scalp dandruff)."

Inflammation of the lid margins at the angles of the commissure (joints or seams).

Inflammation of the margins of the eyelids.

Carbuncle (an infection larger than a boil and with several openings for discharge of pus) of the eyelids.

Marginal blepharitis (inflammation of the margins of the eyelids) due to the presence of lice.

Mild inflammation of the borders of the eyelids with the formation of moist yellow crusts on the ciliary margins which glue the eyelids together.

Marginal blepharitis with the formation of branny scales (desquamation, or shedding, of small husk-like scales).

Marginal blepharitis (inflammation of the margins of the eyelids) with ulceration of the eyelids.