What's wrong with itchy eyelids?

Eyelid itching is the most common occurrence of allergic inflammatory reaction, allergic inflammatory reaction, because of allergen stimulation, local congestion and edema in the morning, and then show the symptoms of eye itching. In addition to allergic reactions, excessive use of eyes, dry eyes, or conjunctival inflammation, will also show eye itching. But at this time, the itchy, itchy feeling of the eyes is not particularly severe, that is to say, the itch may be a slight irritating and extremely itchy state, which may not be so obvious. Therefore, the itchy eyes, especially when extremely itchy, are mainly caused by allergic reactions.