Eyelid trouble is a general term used to describe a variety of conditions that affect the eyelids. These conditions can range from minor irritations such as styes and STY, to more serious issues such as blepharitis and chalazion. A STYE is an infection of the eyelid caused by bacteria, while STY is an inflammation of the eyelid caused by an infection or irritation. Both conditions can cause redness, swelling, and pain in the affected area. Treatment for both conditions typically involves warm compresses, antibiotics, and topical ointments.