Eye pain, Eye redness: 14 Possible Causes
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What causes eye pain and eye redness? 14 possible conditions

See a list of possible causes in order from the most common to the least.


Conjunctivitis (Pink Eye)

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 lines part of your eye, become inflamed. Thi...

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External Eyelid Stye (Hordeolum Externum)

An external eyelid stye is an inflamed area or bump on the eyelid. The medical term for a stye is hordeolum externum . Styes are red, painful lumps (most look like pimples) near the edge of the eyelid, where th...

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Glaucoma is an eye condition that damages your optic nerve. Learn what causes it.

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Uveitis is swelling of the middle layer of the eye, which provides blood to the retina. Read about causes, symptoms, and treatment.

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Cluster Headaches

Cluster headaches are severely painful and occur in cycles. Read more for tips on how to treat and relieve them.

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Corneal Abrasion

This condition is considered a medical emergency. Urgent care may be required.

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 that enters your eye and allows you to see strike...

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Eyelid Turned In (Entropion)

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.

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Dry Eye Syndrome

There are a lot of conditions and medications that can cause dry eye syndrome. Read about the causes and treatment options.

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Corneal Ulcer

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.

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Allergic Conjunctivitis

Allergic conjunctivitis is an eye inflammation caused by an allergic reaction to substances like pollen. Your eyes may become red, itchy, and watery.

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A hyphema is a collection of blood in the eye, between the cornea and the iris. It is painful, and requires immediate medical attention.

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Reactive Arthritis (Reiter's Syndrome)

Reactive arthritis is a type of arthritis triggered by an infection in the body.

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Juvenile Rheumatoid Arthritis

Juvenile rheumatoid arthritis is the most common type of arthritis in children. Learn about juvenile rheumatoid arthritis symptoms, diagnosis, and treatment.

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Eye Emergencies

This condition is considered a medical emergency. Urgent care may be required.

If you have an injured eye or a foreign object in your eye, you'll likely need to seek medical attention right away. Here's what to look out for in eye emergencies.

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This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.