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  1. A1C (National Library of Medicine)  
    A1C is a blood test for type 2 diabetes and prediabetes. It measures your average blood glucose, or blood sugar, level over the past 3 months. Doctors may ...
  2. Abdominal Pain (National Library of Medicine)  
    Your abdomen extends from below your chest to your groin. Some people call it the stomach, but your abdomen contains many other important organs. Pain in ...
  3. Abortion (National Library of Medicine)  
    An abortion is a procedure to end a pregnancy. It can be done two different ways: Medication abortion, which uses medicines to end the pregnancy. It is ...
  4. Abscess (National Library of Medicine)  
    An abscess is a pocket of pus. You can get an abscess almost anywhere in your body. When an area of your body becomes infected, your body's immune system ...
  5. Acne (National Library of Medicine)  
    Acne is a common skin disease that causes pimples. Pimples form when hair follicles under your skin clog up. Most pimples form on the face, neck, back, chest, ...
  6. Acoustic Neuroma (National Library of Medicine)  
    An acoustic neuroma is a benign tumor that develops on the nerve that connects the ear to the brain. The tumor usually grows slowly. As it grows, it presses ...
  7. Acupuncture (National Library of Medicine)  
    Acupuncture has been practiced in China and other Asian countries for thousands of years. Acupuncture involves stimulating specific points on the body. This is most ...
  8. Acute Bronchitis (National Library of Medicine)  
    Bronchitis is an inflammation of the bronchial tubes, the airways that carry air to your lungs. It causes a cough that often brings up mucus. It can also cause ...
  9. Acute Flaccid Myelitis (National Library of Medicine)  
    What is acute flaccid myelitis (AFM)? Acute flaccid myelitis (AFM) is a neurologic disease. It is rare, but serious. It affects an area of the spinal cord ...
  10. Acute Lymphocytic Leukemia (National Library of Medicine)  
    What is leukemia? Leukemia is a term for cancers of the blood cells. Leukemia starts in blood-forming tissues such as the bone marrow. Your bone marrow ...
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