What causes itchy corners of the eyes

Itchy eyes can be caused by allergic conjunctivitis, blepharitis, allergic blepharitis and other diseases.
1. Allergic conjunctivitis: Allergic conjunctivitis is a common cause of itchy eyes, mainly due to the conjunctival tissues of the surface of the eye come into contact with pollen, smoke, dust and other irritants in the environment, which triggers an allergic reaction, and itchy corners of the eyes, accompanied by bloodshot eyes, edema, and secretion exudation and other manifestations.
2. Blepharitis: Blepharitis is an inflammation that occurs on the surface of the eyelid margin, eyelash follicles and other parts of the eyelid margin, usually associated with bacterial infections and other factors, can appear itchy symptoms, accompanied by a burning sensation and tingling sensation of the eye, localized congestion, swelling and vesiculation and other manifestations.
3. Allergic blepharitis: allergic blepharitis is mainly due to the corner of the eye contact with hair dyes, skin care products, cosmetics and other allergens, local allergic reaction caused by itching symptoms, accompanied by local skin edema and congestion.
Itchy corners of the eyes, should consult a doctor in time, under the guidance of the doctor to actively carry out appropriate treatment, will help to alleviate the discomfort symptoms as soon as possible.