Patients with swollen and painful and itchy corners of the eyes may be caused by ocular trauma, blepharitis, blepharitis and other factors. 1. Trauma: If the patient has an open wound at the corner of the eye, localized swelling and pain may occur. As the granulation tissue at the wound grows and heals, the patient may experience discomfort such as itching and pain. 2. Blepharitis: If the patient’s eyelid glands are infected by pathogenic bacteria, resulting in blepharitis, the patient may experience redness, swelling, eye pain, itching and other uncomfortable symptoms. 3. Blepharitis: If the patient’s eyelid margins are infected with bacteria and other germs, blepharitis will occur. Under the stimulation of local inflammation, the patient may experience discomfort such as eyelid margin skin congestion, swelling, eye itching and tingling. It is recommended that patients with swelling, pain and itching at the corners of the eyes should consult a doctor in time to assess their condition and follow the doctor’s instructions for treatment.