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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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Schizophrenia - National Library of Medicine

Schizophrenia is a serious brain illness. People who have it may hear voices that aren't there. They may think other ... disorder makes it hard for them to keep a job or take care of themselves. Symptoms of ...

Sleep Apnea - National Library of Medicine

Sleep apnea is a common disorder that causes your breathing to stop or get very shallow. Breathing pauses can last from a few seconds to minutes. They may occur 30 ...

Teen Mental Health - National Library of Medicine

Being a teenager is hard. You're under stress to be liked, do well in school, get along with ... hopeless or worthless could be warning signs of a mental health problem. Mental health problems are real, ...

Throat Disorders - National Library of Medicine

Your throat is a tube that carries food to your esophagus and air to your windpipe and larynx. The technical name for your ... Throat problems are common. You've probably had a sore throat. The cause is usually a viral ...

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 ...

Bed Bugs - National Library of Medicine

... 4 to 3/8 inch long, and have a flat, oval-shaped body. Young bed bugs (called ... and lighter in color. Bed bugs hide in a variety of places around the bed. They might ...

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 ...



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