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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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Vitamin K - National Library of Medicine

... have very little vitamin K. They usually get a shot of vitamin K soon after they are ... Most people get vitamin K from plants such as green vegetables, and dark berries. Bacteria in your ...

Abscess - National Library of Medicine

An abscess is a pocket of pus. You can get an abscess almost anywhere in your body. When an area of your body ... inflammation. During this process, pus forms. Pus is a mixture of living and dead white blood cells, ...

Anaphylaxis - National Library of Medicine

Anaphylaxis is a serious allergic reaction. It can begin very quickly, and symptoms may be life-threatening. The most common causes ... system - dizziness or fainting If someone is having a serious allergic reaction, call 911. If an auto- ...

Aneurysms - National Library of Medicine

An aneurysm is a bulge or "ballooning" in the wall of an artery. Arteries are blood vessels that carry oxygen-rich blood from ... an aneurysm in the brain bursts, it causes a stroke. Aneurysms can develop and become large before ...

Aortic Aneurysm - National Library of Medicine

An aneurysm is a bulge or "ballooning" in the wall of an artery. Arteries are blood vessels that carry oxygen-rich blood from ... ages of 65 and 75 if they have a family history, or if they are men who ...

Behcet's Syndrome - National Library of Medicine

Behcet's syndrome is a disease that involves vasculitis, which is inflammation of the blood vessels. It causes problems in many parts of the ... their 20s and 30s. Diagnosing Behcet's can take a long time, because symptoms may come and go, ...

Bell's Palsy - National Library of Medicine

... eye Impaired ability to taste Scientists think that a viral infection makes the facial nerve swell or ... if you are pregnant, diabetic or sick with a cold or flu. Three out of four patients ...



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