In-depth

Behcet's disease

Behcet's disease affects several body systems and causes a variety of signs and symptoms. Find out what it is and how it's treated.

Blepharitis

Inflamed eyelids? It could be blepharitis. Explore the symptoms, causes and treatments of blepharitis.

Chronic daily headaches

Chronic daily headaches strike nearly every day. Aggressive initial treatment and steady, long-term management can help reduce pain and lead to fewer headaches.

Cluster headache

Cluster headaches usually occur repeatedly on one side of your head and cause intense pain that feels like a stabbing sensation in your eye.

Drug addiction

Drug addiction is the compulsive dependence on a legal or illegal drug. Treatment and a strong support system may help break an addiction.

Dry eyes

Tears protect and lubricate your eyes. Dry eyes caused by decreased tear production or poor tear quality can interfere with clear, comfortable vision.

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

Ebola virus and Marburg viruses cause hemorrhagic fevers, serious and potentially life-threatening illnesses.

Ectropion

Ectropion — Comprehensive overview covers symptoms, causes, treatment of a sagging or outwardly turned eyelid.

Glaucoma

Glaucoma is a group of eye conditions that, left untreated, can seriously damage your optic nerve and lead to blindness.

Hangovers

Hangovers are the unwelcome result of drinking too much alcohol. However unpleasant, most hangovers go away on their own within eight to 24 hours.

Hyperthyroidism

Hyperthyroidism occurs when your thyroid gland produces too much of the hormone thyroxine — speeding up your metabolism and sometimes leading to serious complications.

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

Keratitis is an inflammation of the cornea — the clear, dome-shaped tissue on the front of your eye that covers the pupil and iris.

Pink eye (conjunctivitis)

Pink eye (conjunctivitis) is an inflammation or infection that makes the white of your eye appear pink. The condition can be contagious, especially among children.

Retinoblastoma

Retinoblastoma is a cancerous tumor of the eye that generally affects young children. If retinoblastoma is detected early, a cure is possible.

Rubella

Rubella, a contagious viral infection, is most dangerous to pregnant women. Rubella can be prevented with the combined measles-mumps-rubella vaccine.

Sarcoidosis

Sarcoidosis starts in your lungs but can cause inflammation in any part of your body. It can last a lifetime, or disappear in a few years.

Toxic shock syndrome

Toxic shock syndrome is a life-threatening infection often associated with the use of superabsorbent tampons. But it can also occur in men and children.

Tularemia

Tularemia is a rare, highly infectious disease spread by insects and wild animals. Landscapers, hunters and laboratory workers are especially at risk.

Uveitis

Uveitis — inflammation of the eye is a serious condition that can lead to vision loss if not treated promptly.

Wegener's granulomatosis

Wegener's granulomatosis is an uncommon disease that causes blood vessel inflammation that can damage lungs, kidneys and other organs. Untreated, it can be fatal.

Whooping cough

Whooping cough is a serious lung infection that's especially dangerous in young infants.

Yellow fever

A vaccine can protect you against yellow fever — a sometimes deadly mosquito-borne disease found in sub-Saharan Africa and South America.

Mar. 02, 2013