Eye swelling and headache are common clinical symptoms and cause more diseases. The common causes are as follows: 1. Excessive eye use, such as reading books for too long, looking at cell phones for too long easily cause eye muscle fatigue, eye overuse and headache, eye pain symptoms, usually not excessive eye use to avoid visual fatigue. 2. glaucoma is caused by increased eye pressure, common clinical symptoms are eye pain, headache, nausea, blurred vision, etc. can go to the hospital ophthalmology to confirm the diagnosis. 3. cold is The common clinical symptoms are fever, headache, nasal congestion, eye discomfort, etc. 4, hypertension patients with unstable blood pressure control and complications such as hypertensive encephalopathy, malignant hypertension, cerebral hemorrhage, can cause severe headache, eye pain and other symptoms, mainly due to increased intracranial pressure.