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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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Premature Babies - National Library of Medicine

... in the United States are premature, or preemies. A premature birth is when a baby is born before 37 completed weeks of pregnancy. A full-term pregnancy is 40 weeks. Important growth ...

Pressure Sores - National Library of Medicine

... your bones are close to your skin, such as your ankles, back, elbows, heels and hips. You are at risk if you are bedridden, use a wheelchair, or are unable to change your position. ...

Pulmonary Fibrosis - National Library of Medicine

Pulmonary fibrosis is a condition in which the tissue deep in your lungs becomes scarred over time. This tissue gets thick and stiff. ... disease. Interstitial lung disease is the name for a large group of diseases that inflame or scar ...

Reye Syndrome - National Library of Medicine

Reye syndrome is a rare illness that can affect the blood, liver, and brain of someone who has recently had a viral infection. It always follows another illness. Although ...

Salmonella Infections - National Library of Medicine

Salmonella is the name of a group of bacteria. In the United States, it is a common cause of foodborne illness. Salmonella occurs in raw poultry, eggs, ... Your health care provider diagnoses the infection with a stool test. Most people get better without treatment. ...

Skin Conditions - National Library of Medicine

... Some of them can cause uncomfortable symptoms, such as itching, burning, redness, and rashes. They might also ... cuts, bumps and scrapes. If you do get a cut or scrape, clean it right away with ...

Spider Bites - National Library of Medicine

... dangerous to people. If you are bitten by a spider, you may see a reaction similar to that of a bee sting, including redness, pain and swelling at the site. To treat a spider bite:
  • Wash the area well with soap ...

Spleen Diseases - National Library of Medicine

... ribs on your left side. It is about as big as your fist. The spleen is part of your ... surgery to remove it. You can live without a spleen. Other organs, such as your liver, will ...

Sports Fitness - National Library of Medicine

Sports can be a great way to get in shape or stay that way. Having a specific goal can be a great motivator. Physically, you need strength and endurance. ... not train the same way for pole vaulting as for swimming. You might, however, cross train. Cross ...

Ulcerative Colitis - National Library of Medicine

Ulcerative colitis (UC) is a disease that causes inflammation and sores, called ulcers, in the lining of the rectum and colon. It is one of a group of diseases called inflammatory bowel disease. UC ...

Urethral Disorders - National Library of Medicine

... pass out of the body. In men, it's a long tube that runs through the penis. It ... aging, illness, or injury. They include: Urethral cancer - a rare cancer that happens more often in men ...

Uterine Diseases - National Library of Medicine

... The uterus, or womb, is the place where a fetus grows during pregnancy. Uterine diseases are conditions ... to weakened pelvic muscles. This can happen after a few vaginal births, menopause, or because of obesity. ...

Valley Fever - National Library of Medicine

Valley Fever is a disease caused by a fungus (or mold) called Coccidioides. The fungi live in the soil of dry areas like the southwestern U.S. You get it from inhaling ...

Vasculitis - National Library of Medicine

... mistake. It can happen because of an infection, a medicine, or another disease. The cause is often ... that connect the small arteries and veins. When a blood vessel becomes inflamed, it can: Narrow, making ...

Wilms Tumor - National Library of Medicine

Wilms tumor is a rare type of kidney cancer. It causes a tumor on one or both kidneys. It usually affects children, but ... three months until they turn eight. Symptoms include a lump in the abdomen, blood in the urine, ...



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