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Let's see if we can figure out what's causing your conjunctivitis.
Select additional symptoms and we'll narrow your results.

What causes conjunctivitis? 4 possible conditions

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. This gives your eye the red or pink color... Read more

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

1

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.

Read more »

2

Allergies Overview

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

Learn about what causes allergies, the different types of allergies, and how they're treated.

Read more »

3

Ebola Virus and Disease

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

Ebola disease is a rare, often fatal illness. One of its late-stage symptoms is a bleeding rash over the entire body.

Read more »

4

Absence of Gamma Globulin in Blood

Agammaglobulinemia is an inherited immune system disorder in which the body is unable to produce antibodies.

Read more »

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