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MedlinePlus is a service of the National Library of Medicine (NLM), the world's largest medical library, which is part of the National Institutes of Health (NIH). It was built as an online health information resource for patients and their families and friends.

MedlinePlus presents high-quality, easy to understand, relevant health and wellness information that is trusted.

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Hemorrhagic Stroke - National Library of Medicine

A stroke is a medical emergency. There are two types - ischemic and hemorrhagic. Hemorrhagic stroke is the less common type. It happens when a blood vessel breaks and bleeds into the brain. ...

Herniated Disk - National Library of Medicine

... In between them are soft disks filled with a jelly-like substance. These disks cushion the vertebrae and keep them in place. As you age, the disks break down or degenerate. ...

Impetigo - National Library of Medicine

Impetigo is a skin infection caused by bacteria. It is usually caused by staphylococcal (staph) bacteria, but it can also be ... six. It usually starts when bacteria get into a break in the skin, such as a cut, ...

Infectious Diseases - National Library of Medicine

... cold. Fungi are primitive plant-like organisms such as mushrooms, mold, mildew, and yeasts. Athlete's foot and ... germ. They can include: Through direct contact with a person who is sick. This includes kissing, touching, ...

Inhalants - National Library of Medicine

... are other substances that people might inhale, such as alcohol. But those are not called inhalants, because ... polish remover, gasoline, and glue. Aerosol sprays, such as spray paint, deodorant spray, and vegetable oil sprays. ...

Jaundice - National Library of Medicine

... yellow. Too much bilirubin causes jaundice. Bilirubin is a yellow chemical in hemoglobin, the substance that carries oxygen in your red blood cells. As red blood cells break down, your body builds ...

Klinefelter Syndrome - National Library of Medicine

... is Klinefelter syndrome (KS)? Klinefelter syndrome (KS) is a genetic condition that happens when a male is born with an extra copy of ... KS)? KS is not inherited. It's caused by a random error that happens when a sperm or ...

Liver Diseases - National Library of Medicine

... of liver diseases: Diseases caused by viruses, such as hepatitis A, hepatitis B, and hepatitis C Diseases caused by ... disease and cirrhosis. Liver cancer Inherited diseases, such as hemochromatosis and Wilson disease Symptoms of liver disease ...

Mastectomy - National Library of Medicine

What is a mastectomy? A mastectomy is surgery to remove part or all of the breast. It's usually done to treat breast cancer by removing the cancer. A mastectomy may be the first treatment option for ...

Memory - National Library of Medicine

... of memory. Short-term memory stores information for a few seconds or minutes. Long-term memory stores it for a longer period of time. Memory doesn't always ...

Moles - National Library of Medicine

... Most people have between 10 and 40 moles. A person may develop new moles from time to ... usually round or oval and no larger than a pencil eraser. About one out of every ten ...

MRSA - National Library of Medicine

... stands for methicillin-resistant Staphylococcus aureus. It causes a staph infection (pronounced "staff infection") that is resistant ... close skin-to-skin contact with others, such as athletes involved in football and wrestling. Infection control ...

Ovarian Cysts - National Library of Medicine

... part of the female reproductive system. They produce a woman's eggs and make female hormones. Ovarian cysts ... out that they have them until they have a pelvic exam. If there are symptoms, they may ...

Pancreatic Cancer - National Library of Medicine

The pancreas is a gland behind your stomach and in front of your spine. It produces the juices that help break down food ... feel the tumors during routine exams. Doctors use a physical exam, blood tests, imaging tests, and a ...

Pancreatitis - National Library of Medicine

The pancreas is a large gland behind the stomach and close to the first part of the small intestine. It secretes digestive juices into the small intestine through a tube called the pancreatic duct. The pancreas also ...



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