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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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Metabolic Disorders - National Library of Medicine

... store the energy in your body tissues, such as your liver, muscles, and body fat. A metabolic disorder occurs when abnormal chemical reactions in ... cells that produce the energy. You can develop a metabolic disorder when some organs, such as your ...

Mood Disorders - National Library of Medicine

... to time. They may say they're in a bad mood. A mood disorder is different. It affects a person's everyday emotional state. Nearly one in ten ... also called manic depression). Mood disorders can increase a person's risk for heart disease, diabetes, and other ...

Myositis - National Library of Medicine

... of your body. Dermatomyositis causes muscle weakness, plus a skin rash. Other symptoms of myositis may include: ... falling Trouble swallowing or breathing Doctors may use a physical exam, lab tests, imaging tests and a ...

Nail Diseases - National Library of Medicine

... fingers. They are made up of layers of a hardened protein called keratin, which is also in ... skin. The health of your nails can be a clue to your overall health. Healthy nails are ...

Nasal Cancer - National Library of Medicine

... through it on the way to your throat as you breathe. Cancer of the nasal cavity and ... Exposed to certain workplace chemicals Infected with HPV A smoker There may be no symptoms at first, ...

Neuromuscular Disorders - National Library of Medicine

... waste away. You may also have symptoms such as spasms, twitching, and pain. Examples of neuromuscular disorders ... inherited (run in families) or are caused by a new mutation in your genes. Some neuromuscular disorders ...

Organ Donation - National Library of Medicine

... organs from one donor can save or help as many as 50 people. Organs you can donate include: Internal ... or guardian must give you permission to become a donor. If you are 18 or older you ...

Pancreatic Diseases - National Library of Medicine

The pancreas is a gland behind your stomach and in front of your spine. It produces juices that help break down food and ... digesting the pancreas itself Pancreatic cancer Cystic fibrosis, a genetic disorder in which thick, sticky mucus can ...

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 ...

Prenatal Testing - National Library of Medicine

... visit, your health care provider will test for a number of things, including problems with your blood, ... your pregnancy, your health care provider may suggest a number of other tests, too. Some tests are ...

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 ...

Rare Diseases - National Library of Medicine

A rare disease is one that affects fewer than 200,000 people in the United States. There ... in genes It can be hard to find a specialist who knows how to treat your rare ...

Refractive Errors - National Library of Medicine

... close up Presbyopia - inability to focus close up as a result of aging Astigmatism - focus problems caused by ... refractive errors. Laser eye surgery may also be a possibility. NIH: National Eye Institute

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. ...

Sinusitis - National Library of Medicine

... or even years Recurrent, with several attacks within a year Acute sinusitis often starts as a cold, which then turns into a bacterial infection. Allergies, nasal problems, and certain diseases ...

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 ...



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