The area around the eye is itchy and accompanied by localized swelling. This is usually a symptom of contact blepharitis, which is due to a localized allergic reaction to an allergen. Common allergens include topical medications, cosmetics, and corneal contact lenses, all of which may cause localized allergic reactions. In this case, we should try to find the allergens, and then avoid the environment, you can give local cold compresses to reduce the symptoms of local itching and swelling. Local and systemic need to use anti-allergic drugs, local can choose azelastine hydrochloride eye drops, olopatadine eye drops, fluticasone eye drops, systemic can take oral loratadine. This condition usually recovers quickly, and with proper treatment, symptoms can be quickly reduced in about a week.