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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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Eosinophilic Disorders - National Library of Medicine

Eosinophils are a type of white blood cell. They help fight off infections and play a role in your body's immune response. They can ... cause inflammation. Normally your blood doesn't have a large number of eosinophils. Your body may produce ...

Eye Infections - National Library of Medicine

... Two common eye infections are: Conjunctivitis - also known as pink eye. Conjunctivitis is often due to an ... get it, and it is very contagious. Stye - a bump on the eyelid that happens when bacteria ...

Folic Acid - National Library of Medicine

Folic acid is a B vitamin. It helps the body make healthy new cells. Everyone needs folic acid. For women who may get ... foods you eat, you can also take it as a dietary supplement. NIH: National Institutes of Health ...

Gaucher Disease - National Library of Medicine

Gaucher disease is a rare, inherited disorder. It is a type of lipid metabolism disorder. If you have it, you do not have ... enzyme called glucocerebrosidase. This causes too much of a fatty substance to build up in your spleen, ...

Giant Cell Arteritis - National Library of Medicine

Giant cell arteritis is a disorder that causes inflammation of your arteries, usually in the scalp, neck, and arms. It narrows the arteries, which keeps ... diagnosis based on your medical history, symptoms, and a physical exam. There is no specific test for ...

Global Health - National Library of Medicine

The spread of a disease doesn't stop at a country's borders. With more people living in crowded cities and traveling to other ... other global health challenges. Resistance to medicines such as antibiotics is on the rise. That makes it ...

Hay Fever - National Library of Medicine

... in your nose and throat. This can trigger a type of allergy called hay fever. Symptoms can include: Sneezing, often with a runny or clogged nose Coughing and postnasal drip ...

Hemochromatosis - National Library of Medicine

Hemochromatosis is a disease in which too much iron builds up in your body. Your body needs iron but too much ... is usually the result of something else, such as anemia, thalassemia, liver disease, or blood transfusions. Many ...

Herpes Simplex - National Library of Medicine

Herpes is an infection that is caused by a herpes simplex virus (HSV). Oral herpes causes cold ... genitals, buttocks or anal area. Genital herpes is a sexually transmitted infection (STI). It affects the genitals, ...



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