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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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Health Screening - National Library of Medicine

... equipment, so you may need to go to a different office or clinic. Some conditions that doctors ... you have risk factors for certain diseases. After a screening test, ask when you will get the ...

Infectious Arthritis - National Library of Medicine

... Joints are places where two bones meet, such as your elbow or knee. Infectious arthritis is an infection in the joint. The infection comes from a bacterial, viral, or fungal infection that spreads from ...

Lymphedema - National Library of Medicine

Lymphedema is the name of a type of swelling. It happens when lymph builds up in your body's soft tissues. Lymph is a fluid that contains white blood cells that defend ...

Mercury - National Library of Medicine

... soil. It has several forms. Metallic mercury is a shiny, silver-white, odorless liquid. If heated, it is a colorless, odorless gas. It also combines with other ...

Mild Cognitive Impairment - National Library of Medicine

Some forgetfulness can be a normal part of aging. However, some people have more memory problems than other people their age. This condition is called ... have MCI. You may also need to see a specialist for more tests. Because MCI may be ...

Mumps - National Library of Medicine

... vaccination program in the United States, mumps was a common illness in infants, children and young adults. Now it is a rare disease in the U.S. Centers for Disease ...

Mycobacterial Infections - National Library of Medicine

Mycobacteria are a type of germ. There are many different kinds. The most common one causes tuberculosis. Another one causes leprosy. ... with other problems that affect their immunity, such as AIDS. Sometimes you can have these infections with ...

Osteonecrosis - National Library of Medicine

Osteonecrosis is a disease caused by reduced blood flow to bones in the joints. In people with healthy bones, new bone ... At first, you might not have any symptoms. As the disease gets worse, you will probably have ...

Pituitary Disorders - National Library of Medicine

Your pituitary gland is a pea-sized gland at the base of your brain. The pituitary is the "master control gland" - it makes hormones that ... pituitary disorders, but the most common cause is a pituitary tumor.



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