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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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Antibiotics - National Library of Medicine

... Taking antibiotics when they're not needed won't help you, and they can have side effects. ... treatment for you when you're sick. Don't ask your provider to prescribe an antibiotic for ...

Congenital Heart Defects - National Library of Medicine

... These defects happen when a baby's heart doesn't develop normally during pregnancy. Congenital heart defects are ... What causes congenital heart defects? Researchers often don't know what causes congenital heart defects. They do ...

Lymphoma - National Library of Medicine

... a type of white blood cell, called a T cell or B cell, becomes abnormal. The cell ... the body. Most of the time, doctors don't know why a person gets non-Hodgkin lymphoma. ...

Teen Sexual Health - National Library of Medicine

... human papillomavirus) Pubic lice Syphilis Trichomoniasis STIs don't always cause symptoms. So it is possible to ... getting tested before having sex. If you can't talk about STIs, you aren't ready to ...

Diabetes - National Library of Medicine

... energy. If you have diabetes, your body can't make insulin, can't use insulin as well as it should, or ... much glucose stays in your blood and doesn't reach your cells. This can cause glucose levels ...

Prostate Cancer - National Library of Medicine

... is serious.What causes prostate cancer? Researchers don't know for sure what causes prostate cancer. They ... the symptoms of prostate cancer? Prostate cancer doesn't always cause symptoms, especially at first. If it ...

Tuberculosis - National Library of Medicine

... TB germs live in your body but don't make you sick. TB disease (active TB) where ... who have TB germs in their bodies don't get sick with TB disease. Instead, they have ...

Medicines and Children - National Library of Medicine

Children aren't just small adults. It is especially important to remember this when giving medicines to children. Giving a child ... side effects in your child The medicine doesn't appear to be working when you expect it ...

Sexual Assault - National Library of Medicine

... the sexual activity happens even though you don't agree to it. Sexual assault may happen with: ... say what you want to do and don't want to do. Are not underage. Are not ...

Sudden Cardiac Arrest - National Library of Medicine

... During a heart attack, the heart usually doesn't suddenly stop beating. With an SCA, the heart ... where the ventricles (the heart's lower chambers) don't beat normally. Instead, they beat very fast and ...



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