What’s wrong with the upper eyelid that itches and then swells?

Itching and swelling of the upper eyelids may be caused by allergic blepharitis and blepharitis.
Allergic blepharitis is caused by allergic reactions to the skin of the eye, usually after the patient applies cosmetics and skin care products to the eye, the patient may experience eyelid itching, swelling and other discomforts. Patients can follow the doctor’s instructions to use hormone drugs to relieve eye discomfort, such as tobramycin dexamethasone ophthalmic ointment, etc., to control the inflammation.
Blepharitis is mostly caused by poor eye hygiene, triggering bacterial infections in the eyelid margins. Under the stimulation of inflammation, patients may experience itching, swelling, burning sensation and other discomforts of the eyelids, and patients can follow the doctor’s instructions to use antibiotic eye ointment treatment, such as erythromycin ophthalmic ointment, gentamycin ophthalmic ointment, and so on.
It is recommended that patients with itchy eyelids and obvious edema should consult the hospital in time to assess their condition and follow the doctor’s instructions for treatment.