The conjunctiva is the clear, thin tissue that lines the inside of your eyelid and covers the white of your eye.
The sclera is the white outer layer of your eyeball.
The episclera is the layer of clear tissue between the conjunctiva and the sclera.
What is episcleritis?
Episcleritis is inflammation (irritation and swelling) of your episclera.
Doctors don’t usually know what causes episcleritis, but it sometimes happens in people who have shingles Shingles After you've had chickenpox, the virus that caused it stays in your body all your life. If the virus becomes active again, you get shingles. Shingles is a viral infection that causes a painful... read more
, rheumatoid arthritis, Rheumatoid Arthritis (RA) Arthritis is a group of diseases that makes your joints hurt, swell up, and turn red. There are many different types of arthritis. RA is a type of arthritis in which your body's immune system... read more 
or another health problem that causes inflammationYou may have a small red (or sometimes yellowish) spot on your eye that can come and go
Episcleritis usually happens in young adults, and it's more common in women than men
Episcleritis goes away on its own, but doctors may tell you to use corticosteroid eye drops to make your symptoms go away faster
Parts of the Eye
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What are the symptoms of episcleritis?
Eye symptoms usually happen in one eye and include:
Redness
Swelling
Irritation or tenderness
A red or yellowish raised area over part of the white part of your eye that sometimes can look bumpy
You won't have any trouble seeing.
How do doctors treat episcleritis?
Episcleritis goes away on its own without treatment. To make your symptoms go away faster, doctors will tell you to:
Take an anti-inflammatory pain medicine, such as ibuprofen
Use corticosteroid eye drops if symptoms are more severe
Eye drops that shrink blood vessels (sold over-the-counter) might make your eye look less red. But they don't make the episcleritis go away any faster.
