What causes sudden swelling and slight pain in the double eyelid?

Generally, sudden swelling of the double eyelid accompanied by pain may be related to causes such as eyelid edema, ocular trauma, blepharitis, conjunctivitis, or meibomian gland dysfunction. It is recommended to seek timely medical attention to determine the underlying cause and receive appropriate treatment under the guidance of a qualified physician. Detailed explanations are as follows:

1. Eyelid Edema

Drinking excessive amounts of water at night or insufficient sleep may slow down the circulation of blood around the eyes, leading to edema. It is recommended to maintain good sleeping habits and avoid excessive water intake at night.

2. Ocular Trauma

When the eye suffers from external impact or friction, eyelid tissue damage and rupture of capillaries may occur, resulting in swelling and pain. It is recommended to wear protective goggles during sports or high-risk activities to avoid accidental eye injuries.

3. Blepharitis

Blepharitis is usually caused by bacterial infection. The infection leads to inflammation and swelling of the eyelid glands, accompanied by pain. Symptoms typically include redness, formation of pus points, and increased local temperature. Treatment may include medications such as ofloxacin eye drops, chlortetracycline ointment, or tobramycin eye drops, as directed by a physician.

4. Conjunctivitis

Conjunctivitis is commonly caused by viral or bacterial infections. Inflammation of the conjunctiva causes conjunctival congestion and edema, which may irritate the eyelid and result in swelling and pain. Common symptoms include red eyes, tearing, and a foreign body sensation. Treatment may include acyclovir eye drops, erythromycin ointment, or compound neomycin sulfate eye drops, as recommended by a doctor.

5. Meibomian Gland Dysfunction

Meibomian gland dysfunction is usually caused by abnormal secretion of the meibomian glands. Blockage of these glands can lead to eyelid swelling and pain. Additional symptoms may include dry eyes, a foreign body sensation, and fluctuating vision. Treatment may involve medications such as vitamin B12 tablets, sodium hyaluronate eye drops, or polyvinyl alcohol eye drops, as prescribed by a doctor.

Maintaining healthy lifestyle habits and properly managing eye usage time to avoid prolonged use of electronic devices is important for maintaining eye health.