The itchy and swollen bags under the eyes may be caused by blepharitis, dacryocystitis, contact dermatitis and other diseases, and the patient can take medication, surgical treatment and other therapeutic measures. 1. Blepharitis: For blepharitis caused by itchy red swollen bags under the eyes, patients can follow the doctor’s instructions to use levofloxacin hydrochloride eye drops, tobramycin eye drops and other antibiotic eye drops, but also use erythromycin eye ointment, tobramycin eye ointment and other antibiotic eye ointment. If the patient has a serious abscess, it can be treated by incision and drainage of pus surgery. 2. Dacryocystitis: Dacryocystitis can also cause patients to have itchy and swollen eyes, patients can follow the doctor’s instructions to use tobramycin dexamethasone eye drops, ofloxacin eye drops and other antibiotics eye drops, but also oral amoxicillin capsule, roxithromycin capsule and other antibiotics. In addition, patients can also take surgical treatment, such as incision and drainage, nasal lacrimal sac anastomosis, lacrimal sac removal and other surgical methods. 3. Contact dermatitis: for contact dermatitis caused by itchy and swollen bags under the eyes, patients can follow the doctor’s instructions to use mometasone furoate cream, hydrocortisone butyrate cream and other glucocorticosteroid ointment, but also oral chlorpheniramine maleate tablets, cetirizine hydrochloride tablets and other antihistamines. Patients with symptoms of itchy and red bags under the eyes may also be caused by allergies, eyelid eczema, conjunctivitis and other diseases, patients should seek medical attention in a timely manner and follow the doctor’s instructions for treatment.