Internet Protocol version 6 (IPv6) is the most recent version of the Internet Protocol (IP), the communications protocol that provides an identification and location system for computers on networks and routes traffic across the Internet.
The most common cause of eyelid swelling is eye allergies. Eye allergies sometimes cause significant discomfort, often interrupting daily activities with annoying symptoms such as eyelid irritation and swelling. Eye allergies develop when the immune system overreacts to a certain allergen.
Diseases or illnesses that may lead to eyelid drooping include: 1  Brain tumor or other cancer, which can affect nerve or muscle reactions. 2  Diabetes. 3  Horner syndrome. 4  Myasthenia gravis. 5  Stroke.