Patients with itchy, painful, swollen eyelids may be caused by atopic dermatitis, blepharitis, conjunctivitis and other diseases, patients should consult a doctor in a timely manner to clarify the cause of the disease after treatment. 1. Allergic dermatitis: If the allergic patients after contact with pollen, dust mites and other substances, eyelid itching, pain, swelling and other uncomfortable symptoms, most of the allergic dermatitis caused by the patient will also have localized rashes, air masses, patients can follow the doctor’s instructions to use benadryl, cetirizine and other drugs to promote the recovery of the condition. 2. blepharitis: blepharitis refers to purulent inflammation of the eyelid glands, patients can appear eyelid itching, pain, swelling and other discomforts, patients can follow the doctor’s instructions to use tobramycin eye drops, erythromycin ophthalmic ointment and other medications to promote recovery. 3. Conjunctivitis: bacterial, viral and other germs infection or physical stimulation, patients can appear conjunctivitis, in the inflammation stimulation, patients can appear photophobia, tearing, eyelid itching, pain and other symptoms, patients can follow the doctor’s instructions to use levofloxacin eye drops and other drugs to promote the recovery of the condition. It is recommended that patients with swollen, painful and itchy eyelids should consult a doctor in time to assess their condition and follow the doctor’s instructions for treatment.