Learn the basics about blocked tears duct, including the treatment and self-care.

Discusses hyperthyroidism and what happens to the body's metabolism if the thyroid gland is overactive. Explains how Graves' disease usually causes an overactive thyroid. Describes symptoms. Covers exams and tests to diagnose it. Provides info on treatment.

Discusses allergic rhinitis. Covers common immediate and chronic symptoms. Looks at what increases risk. Covers treatment options. Offers prevention and treatment tips.

Discusses causes and symptoms of twisted, enlarged veins near the surface of the skin called varicose veins. Covers treatment with self-care, sclerotherapy, endovenous laser, and radiofrequency. Includes vein surgery called ligation and stripping.

What are styes and chalazia? Styes and chalazia are lumps in or along the edge of an eyelid. They may be painful or annoying, but they are rarely serious. Most will go away on their own without treatment. A stye is an infection that causes a tender red lump on the eyelid. Most styes occur along the edge of the eyelid...

What is blepharitis? Blepharitis (say "bleh-fuh-RY-tus") is a skin problem that affects the eyelids and lashes. It may be caused by bacteria or by other skin conditions such as dandruff, skin allergies, or eczema. If you have blepharitis, you're also more likely to get styes. What are the symptoms? If you have...

Guides you through the decision to take insulin for type 2 diabetes. Provides info on when insulin may be needed to control blood sugar levels. Covers benefits and risks of insulin. Includes interactive tool to help you make your decision.

Note: If a chemical has been swallowed that may be a poison or may cause burning in the throat and esophagus, call your local Poison Control Center or the National Poison Control Hotline (1-800-222-1222) immediately for information on treatment. When you call the Poison Control Center, have the chemical container with...

People who have sickle cell disease can sometimes have vision problems. Blood cells that change shape, or "sickle," can get trapped in blood vessels, blocking the blood flow. When this blockage occurs in the small blood vessels in the inner lining...

What is Down syndrome? Down syndrome is a genetic condition. It affects childhood growth and development. People who have it may share similar features and health issues. They may learn to talk later than other children and have some intellectual disability. But every person's experience is different. And everyone with...

Discusses hepatitis C, a disease caused by a virus that infects the liver. Covers causes and symptoms. Includes info on the two phases, acute and chronic. Includes info on cirrhosis. Covers treatment with antiviral medicines and surgery.

What are blood and body fluid precautions? Blood and body fluid precautions are used to prevent transmission of diseases such as HIV or hepatitis. These precautions are used by health care workers and people who provide first aid when they may be in contact with blood or body fluids. Precautions may include protective...

Information on type 2 diabetes. Describes how insulin is made and used by the body. Describes symptoms and how type 2 is treated. Provides info on blood sugar (glucose) levels. Discusses obesity's role in type 2 diabetes. Discusses exercise and diet.

LASIK (laser in-situ keratomileusis) is a surgery that flattens the cornea. It's the most common laser surgery for correcting nearsightedness (myopia) and astigmatism. LASIK makes a small flap in the cornea and removes some of the tissue exposed by the flap. The laser removes tissue from the cornea very accurately. It...

Guides you through decision to have allergy-shot immunotherapy to treat allergic rhinitis (hay fever) and allergic asthma. Explains how allergy shots work. Covers who should not have them. Includes interactive tool to help you make your decision.

What is hepatitis B? Hepatitis B is a virus that infects the liver. Most people who get it have it for a short time and then get better. This is called acute hepatitis B. Sometimes the virus causes a long-term infection, called chronic hepatitis B. Over time, it can damage your liver. Babies and young children infected...

Discusses shingles, a condition caused by the virus that causes chickenpox (herpes zoster). Discusses who is most likely to get it. Describes how shingles rash causes pain and the treatment for it. Includes info on the shingles vaccine.

Answers questions about organ transplants. Covers becoming an organ donor and getting on a waiting list. Covers tests used to see if you'd be a good candidate. Looks at medicines that you might take after a transplant. Offers tips for staying healthy.

What are mitochondrial diseases? Mitochondrial (say "my-tuh-KAWN-dree-uhl") diseases are a group of rare diseases that can sometimes be passed down from mothers to their children. The diseases happen when mitochondria don't work the way they should. Mitochondria are tiny parts of the cells in your body. They are often...

Amazing changes are happening in your newborn's development. Babies' brains develop quickly, as they begin to think, learn, and remember. Newborns listen to and learn the sounds of language. They can communicate with sounds and facial expressions.

Describes sickle cell disease. Covers causes and symptoms. Discusses how it is diagnosed. Covers treatment as the disease progresses, including with surgery or medicines like hydroxyurea. Offers home treatment tips.

Briefly discusses types of poisonings and related symptoms. Offers interactive tool to help decide when to seek care. Also offers first aid steps as well as calling Poison Control.