In-depth

Blepharitis

Chronic daily headaches

Drug addiction

Dry eyes

Dust mite allergy

Dust mite allergy, an immune system reaction to inhaled dust mite "debris," causes hay fever symptoms and may cause allergy-induced asthma.

Ebola virus and Marburg virus

Glaucoma

Hangovers

Hyperthyroidism

Iritis

Iritis is inflammation that affects the colored area of your eye called the iris. This serious condition can affect your vision if left untreated.

Keratitis

Pet allergy

Pet allergy, an immune system reaction to an inhaled animal protein, causes hay fever symptoms and may cause allergy-induced asthma.

Pink eye (conjunctivitis)

Rubella

Symptom Checker

Foot pain? Headache? Sore throat? Skin rash? Use the Symptom Checker to find out what's causing your symptom.

Toxic shock syndrome

Tularemia

Uveitis

Whooping cough

Yellow fever

Feb. 24, 2016