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Eczema (child) Eczema is a common cause of skin rashes in children, causing redness, bumps, swelling, itchiness, and more. Eczema (teen and adult) Eczema is a skin condition that causes itchy, scaly, and dry skin. Eyelid inflammation (blepharitis) Blepharitis, an inflammation of the eyelids, causes redness, irritation; and itchy, crusty eyelids. Atopic dematitis Atopic dermatitis, a common skin disease, causes itching, dryness, redness, cracking, scaling and oozing.
The causes are many and can have bacterial infection, seborrheic dermatitis of the face or even a scalp, rosacea, allergies, and in very rare cases, the lice. If the itchy eyelids is brought about by seborrheic dermatitis then you may develop dry, flakey patches of skin on the eyelid.