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  • Whooping Cough (Pertussis)

    What is whooping cough? Whooping cough (pertussis) is a disease that causes very severe coughing that may last for months. During bursts of violent coughing, you may make a noise that sounds like a "whoop" when you try to take a breath. You can cough so hard that you hurt...

  • Vitamin B12 Deficiency Anemia

    Discusses vitamin B12 deficiency anemia. Explains role of B12 in red blood cells, which carry oxygen through your body. Covers symptoms and tests used to diagnose. Includes info on treatment with diet and medicines.

  • Urine Test

    A urine test checks different components of urine, a waste product made by the kidneys. It checks the color, clarity (clear or cloudy), odor, concentration, and acidity (pH) of your urine. It also checks your levels of protein, sugar, blood cells, or other substances in your urine. A urine test...

  • Overnight Dexamethasone Suppression Test

    The overnight dexamethasone suppression test checks to see how taking a steroid medicine called dexamethasone changes the levels of the hormone cortisol in the blood. This test checks for a condition in which large amounts of cortisol are produced by the adrenal glands ( Cushing's syndrome). Normally, when the pituitary...

  • Warts and Plantar Warts

    What are warts? Warts are skin growths caused by a virus. Warts can grow anywhere on the body. There are different kinds. For example, common warts grow most often on the hands, but they can grow anywhere. Plantar warts grow on the soles of the feet. Most warts go away...

  • Folate Test

    A folate test measures the amount of folate in the blood. Folate is one of many B vitamins. The body needs folate for normal growth and to make red blood cells (RBC), white blood cells (WBC), and platelets. Folate also is important for the normal development of a baby (fetus).

  • Sinusitis

    Discusses sinusitis, which is infection or inflammation of the lining of the sinus cavities. Covers acute sinusitis and chronic sinusitis. Looks at causes and symptoms. Covers treatment with medicines and surgery.

  • Gout

    Includes information on gout, a type of arthritis caused by too much uric acid in the body. Info on symptoms, including swelling and pain that is often in the big toe. Covers how a diet high in purines can raise uric acid levels. Discusses diagnosis and treatment.

  • Addison's Disease

    What is Addison's disease? Addison's disease develops when the adrenal glands, which are above the kidneys, are not able to make enough of the hormones cortisol and, sometimes, aldosterone. Your body needs both of these hormones to work as it should. Cortisol helps the body cope with extreme physical stress...

  • Guillain-Barré Syndrome

    What is Guillain-Barré syndrome? Guillain-Barré syndrome (say "ghee-YAN bah-RAY") is a problem with your nervous system. It causes muscle weakness, loss of reflexes, and numbness or tingling in your arms, legs, face, and other parts of your body. This rare condition can cause paralysis and lead to death. But most...


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