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.
Per a court order, HHS is required to restore this website as of February 14, 2025, at 11:59 p. ... of the diseases How many people die from a disease Whether people can get health care How ...
Heartburn is a painful burning feeling in your chest or throat. It happens when stomach acid backs up into your esophagus, ... stomach. If you have heartburn more than twice a week, you may have GERD. But you can ...
... rise to dangerous levels and you can develop a heat illness. Most heat illnesses happen when you ... your risk. Heat-related illnesses include: Heat stroke - a life-threatening illness in which body temperature may ...
... types of OIs: Bacterial infections, including tuberculosis and a serious related disease, Mycobacterium avium complex (MAC) Viral infections, such as cytomegalovirus (CMV) and hepatitis C Fungal infections, like ...
... their ovaries. Hormones are powerful. It takes only a tiny amount to cause big changes in cells ... is why too much or too little of a certain hormone can be serious. Laboratory tests can ...
... toxic substances in different ways. At high doses, a toxic substance might cause birth defects or other ... containers they come in and use them exactly as the label says. Follow label directions or get ...
... means not being able to become pregnant after a year of trying. If a woman can get pregnant but keeps having miscarriages ... of couples are unable to get pregnant. About a third of the time, infertility can be traced ...
A cyst is a fluid-filled sac. You may get simple kidney cysts as you age; they are usually harmless. There are also ... cysts in other parts of the body, such as the liver. Often, there are no symptoms at ...
Leishmaniasis is a parasitic disease spread by the bite of infected sand flies. There are several different forms of leishmaniasis. The ... sores. The visceral type affects internal organs such as the spleen, liver, and bone marrow. People with ...
... storage disease Obesity and diabetes Symptoms can include a lump or pain on the right side of ...
... ve probably heard that high blood pressure is a problem. Sometimes blood pressure that is too low ... written one above or before the other, such as 120/80. If your blood pressure reading is ...
... breast symptoms can include: Dimpled or puckered skin A red, scaly nipple or skin Fluid discharge Risk ... for male breast cancer include exposure to radiation, a family history of breast cancer, and having high ...
Managed care plans are a type of health insurance. They have contracts with health care providers and medical facilities to provide care for members at ... choices usually cost you less. If you want a flexible plan, it will probably cost more. There ...
Measles is an infectious disease caused by a virus. It spreads easily from person to person. It causes a blotchy red rash. The rash often starts on the head and moves ...
... term care. The program has four parts: Part A is hospital insurance Part B helps pay for medical services that Part A doesn't cover Part C is called Medicare ...
... may only need to take medicine once in a while. Either way, you want to make sure ... to think about these risks before you take a medicine. Even safe medicines can cause unwanted side ...
... other organs is called mesothelium. Mesothelioma, also known as malignant mesothelioma, is cancer of that tissue. It ... After being exposed to asbestos, it usually takes a long time for the disease to form. Symptoms ...
... the lips and around the mouth, caused by a virus Canker sores - painful sores in the mouth, caused by bacteria or viruses Thrush - a yeast infection that causes white patches in your ...
... neurologic conditions that cause problems with movement, such as: Increased movement that can be voluntary (intentional) or ... to control voluntary movement. Parkinson's disease, which is a disorder that slowly gets worse over time. It ...
... neck pain. The problem is usually overuse, such as from sitting at a computer for too long. Sometimes you can strain ... are another common cause of neck pain. Whiplash, a soft tissue injury to the neck, is also ...
