Conditions list medically reviewed by George Krucik, MD, MBA
Conjunctivitis, commonly known as "pink eye," is an infection or swelling in the outer membrane of your eyeball. Blood vessels in your conjunctiva, a thin membrane that…
Learn about what causes allergies, the different types of allergies, and how they're treated.
Scleritis is a disorder in which the sclera becomes severely inflamed and red. Scleritis is believed to be the result of the body's immune system overreacting.
The cornea is a thin, transparent dome that covers your eye's iris and pupil. The iris is the colored part of your eye, and the pupil is the black center. All light…
An external eyelid stye is a red, painful bump on the surface of the eyelid. Learn about external eyelid stye symptoms, causes, treatment, and prevention.
A corneal ulcer is an open sore that forms on the cornea. It's usually caused by an infection. Even small injuries to the eye can lead to infections.
Entropion is when your eyelid rotates inward. Your eyelashes rub against your eye and cause redness, irritation, and abrasions on the cornea of your eye.
Cluster headaches are severely painful and occur in cycles. Read more for tips on how to treat and relieve them.
Reactive arthritis is a type of arthritis triggered by an infection in the body.
Allergic conjunctivitis is an eye inflammation caused by an allergic reaction to substances like pollen. Your eyes may become red, itchy, and watery.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.