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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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Anemia - National Library of Medicine

... Ulcers Colon polyps or colon cancer Inherited disorders A diet that does not have enough iron, folic acid or vitamin B12 Blood disorders such as sickle cell anemia and thalassemia, or cancer Aplastic ...

Angina - National Library of Medicine

... blood carries. Angina may feel like pressure or a squeezing pain in your chest. It may feel ... shoulders, arms, neck, jaw, or back. Angina is a symptom of coronary artery disease (CAD), the most ...

Artificial Limbs - National Library of Medicine

... or part of an arm or leg for a number of reasons. Common ones include: Circulation problems ... sometimes replace it. The device, which is called a prosthesis, can help you to perform daily activities ...

Bacterial Infections - National Library of Medicine

... living things) that have only one cell. Under a microscope, they look like balls, rods, or spirals. ... types can move into and damage your tissues. A few examples of bacteria that cause infections include ...

Blisters - National Library of Medicine

... Poison ivy, oak, and sumac Autoimmune diseases such as pemphigus Epidermolysis bullosa, an illness that causes the skin to be fragile Viral infections such as varicella zoster (which causes chickenpox and shingles) and ...

Brain Diseases - National Library of Medicine

... works quickly and automatically. But when you have a brain disease, it may affect how well you ... can affect many of your body's activities, such as balance, movement, talking, breathing, and heart function. Types ...

Campylobacter Infections - National Library of Medicine

Campylobacter infection is a common foodborne illness. You usually get it from eating contaminated food, especially raw or undercooked poultry. You can also ... Health care providers use stool tests to make a diagnosis. Most people get better without treatment. You ...

Chikungunya - National Library of Medicine

Chikungunya is a virus that spread by the same kinds of mosquitoes that spread dengue and Zika virus. Rarely, the virus ... swelling, and rash. Most people feel better within a week. In some cases, however, the joint pain ...

Child Development - National Library of Medicine

As children grow older, they develop in several different ways. Child development includes physical, intellectual, social, and ... problems in children. These problems can get worse as time goes on, so it is important to ...

COVID-19 Vaccines - National Library of Medicine

... coronavirus disease 2019) is an illness caused by a virus. This virus is a coronavirus called SARS-CoV-2. Most people with ... very sick. You can protect yourself by getting a COVID-19 vaccine. The vaccines might help keep ...

Cytomegalovirus Infections - National Library of Medicine

Cytomegalovirus (CMV) is a virus found around the world. It is related to the viruses that cause chickenpox and infectious mononucleosis (mono). Between ... of adults in the United States have had a CMV infection by age 40. Once CMV is ...

Dialysis - National Library of Medicine

... your kidneys used to do. Unless you have a kidney transplant, you will need a treatment called dialysis. There are two main types ... harmful wastes, extra salt, and water.: Hemodialysis uses a machine. It is sometimes called an artificial kidney. ...

Diphtheria - National Library of Medicine

Diphtheria is a serious bacterial infection. You can catch it from a person who has the infection and coughs or sneezes. ... by coming in contact with an object, such as a toy, that has bacteria on it. Diphtheria ...

Edema - National Library of Medicine

... especially after mastectomy Some medicines Standing or walking a lot when the weather is warm To keep ... limiting how much salt you eat, or taking a medicine called a diuretic - also called a water ...

Esophageal Cancer - National Library of Medicine

The esophagus is a hollow tube that carries food and liquids from your throat to your stomach. Early esophageal cancer usually does not cause symptoms. Later, you may have symptoms such as: Painful or difficult swallowing Weight loss A hoarse ...

Gangrene - National Library of Medicine

... of tissues in your body. It happens when a part of your body loses its blood supply. ... happen on the surface of the body, such as on the skin, or inside the body, in ...

Health Fraud - National Library of Medicine

... that are not listed on the label Trigger a harmful interaction with medicines you are taking Cause ... pain. They target people with serious conditions such as cancer, diabetes, heart disease, HIV, and Alzheimer's disease. ...

Herniated Disk - National Library of Medicine

... In between them are soft disks filled with a jelly-like substance. These disks cushion the vertebrae and keep them in place. As you age, the disks break down or degenerate. ...



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