Swollen eyes and itchy face may be caused by food allergies, seborrheic dermatitis, solar dermatitis and other diseases. 1. Food allergy: this disease is due to oral intake of certain food proteins caused by the body’s immune system abnormal reaction, common allergens are eggs, milk, peanuts, soy and so on. The patient’s skin will appear air masses, erythema, itching, swelling and other symptoms, in some cases can also trigger eye symptoms, can be manifested as eye swelling face itching. 2. Seborrheic dermatitis: the cause of this disease is not clear, research shows that it may be related to heredity, Malassezia infection, dietary disorders, neurological dysfunction, immune dysfunction, acne, emotional stress and other factors. Its typical symptoms are itchy, scaly, swollen lesions, etc. When the face is involved, the patient will have swollen eyes and itchy face. 3. Solar dermatitis: the basic cause of the disease is that the skin receives too much light for too long, and common triggering factors include excessive alcohol consumption, photosensitive drugs, and moist skin. Sun exposure to the skin will appear erythema, itching, burning sensation and other symptoms, individual patients can be accompanied by eyelid edema, congestion and other symptoms, so the patient will be swollen eyes and face itchy symptoms. Patients with swollen eyes and itchy face are advised to go to the hospital to clarify the exact cause to confirm the treatment.