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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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Penis Disorders - National Library of Medicine

... with the penis can cause pain and affect a man's sexual function and fertility. Penis disorders include: ... inability to get or keep an erection Priapism - a painful erection that does not go away Peyronie's ...

Pericardial Disorders - National Library of Medicine

The pericardium is a membrane, or sac, that surrounds your heart. It holds the heart in place and helps it work properly. Problems ... inflammation of the sac. It can be from a virus or other infection, a heart attack, heart ...

Pet Health - National Library of Medicine

Pets can add fun, companionship and a feeling of safety to your life. Before getting a pet, think carefully about which animal is best for your family. What is ...

Polymyalgia Rheumatica - National Library of Medicine

Polymyalgia rheumatica is a disorder that causes muscle pain and stiffness in your neck, shoulders, and hips. It is most common in women ... doctor will use your medical history, symptoms, and a physical exam to make the diagnosis. Lab tests ...

Postpartum Care - National Library of Medicine

Taking home a new baby is one of the happiest times in a woman's life. But it also presents both physical and emotional challenges. : Get as much rest as possible. You may find that ...

Puberty - National Library of Medicine

Puberty is the time in life when a boy or girl becomes sexually mature. It is a process that usually happens between ages 10 and 14 for girls and ages 12 ... in the pubic area and armpits. Menstruation (or a period) usually happens last. In boys: Puberty usually ...

Steroids - National Library of Medicine

... But there's another type of steroid - sometimes called a corticosteroid - that treats a variety of problems. These steroids are similar to ... corticosteroids to treat: Arthritis Asthma Autoimmune diseases such as lupus and multiple sclerosis Skin conditions such as ...

Stomach Disorders - National Library of Medicine

... on to the small intestine. Most people have a problem with their stomach at one time or ... over-the-counter medicines and lifestyle changes, such as avoiding fatty foods or eating more slowly. Other ...

Stroke Rehabilitation - National Library of Medicine

A stroke can cause lasting brain damage. People who survive a stroke need to relearn skills they lost because ... help them relearn those skills. The effects of a stroke depend on which area of the brain ...

Syringomyelia - National Library of Medicine

Syringomyelia is a rare disorder that causes a cyst to form in your spinal cord. This cyst, called a syrinx, gets bigger and longer over time, destroying part of the spinal ...

Teen Development - National Library of Medicine

As a teenager, you go through many physical, mental, emotional, and social changes. The biggest change is puberty, the ... girls and ages 12 and 16 for boys. As your body changes, you may have questions about ...

Thymus Cancer - National Library of Medicine

The thymus is a small organ in your upper chest, under your breastbone. Before birth and during childhood, the thymus helps the body make a type of white blood cell. These cells help ...

Vegetarian Diet - National Library of Medicine

A vegetarian diet focuses on plants for food. These include fruits, vegetables, dried beans and peas, grains, ... need. However, they must be careful to eat a wide variety of foods to meet their nutritional ...

Wildfires - National Library of Medicine

... are fires that burn out of control in a natural area, like a forest, grassland, or prairie. They often begin unnoticed. ... if you live in an area threatened by a wildfire, you can take actions to protect yourself. ...



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