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Diseases & conditions A-Z List

Diseases & Conditions A-Z List - «H»:

  1. Histoplasma complement fixation Histoplasma complement fixation
    Histoplasma complement fixation is a blood test that checks for signs of infection due to a fungus called Histoplasma capsulatum (H. capsulatum). Some people who breathe in particles of this fungus may get an infection called histoplasmosis. See also: Histoplasmosis - chronic pulmonary Histoplas...
  2. Histoplasma skin test Histoplasma skin test
    Histoplasma skin test is a method to check if you have been exposed to a fungus called Histoplasma capsulatum. The fungus causes an infection called histoplasmosis. How the Test is Performed The health care provider will clean an area of your skin, usually the forearm. An allergen is injected just ...
  3. Histoplasmosis Histoplasmosis
    Histoplasmosis is an infection due to the Histoplasma capsulatum fungus. Causes Histoplasmosis is a fungal infection. It occurs throughout the world. In the United States, it is most common in the southeastern, mid-Atlantic, and central states. The infection enters the body through the lungs. Histo...
  4. Histoplasmosis - acute (primary) pulmonary Histoplasmosis - acute (primary) pulmonary
    Acute pulmonary histoplasmosis is a respiratory infection caused by inhaling the spores of the fungus Histoplasma capsulatum. Causes Histoplasma capsulatum, the fungus that causes histoplasmosis, is found in the Central and Eastern United States, Eastern Canada, Mexico, Central America, South Amer...
  5. Histoplasmosis - chronic pulmonary Histoplasmosis - chronic pulmonary
    Chronic pulmonary histoplasmosis is a long-term respiratory infection caused by breathing the spores of the fungus, Histoplasma capsulatum. See also: Acute pulmonary histoplasmosis Disseminated histoplasmosis Skin lesion of histoplasmosis Causes Histoplasma capsulatum is a fungus found in...
  6. Histoplasmosis - disseminated Histoplasmosis - disseminated
    Disseminated histoplasmosis is a fungal infection that occurs after inhaling the spores of the fungus Histoplasma capsulatum. See also: Histoplasmosis Histoplasmosis - acute Histoplasmosis - chronic pulmonary Skin lesion of histoplasmosis Causes Histoplasmosis is caused by a fungus found ...
  7. Histrionic personality disorder Histrionic personality disorder
    Histrionic personality disorder is a condition in which a person acts very emotional and dramatic in order to get attention. Causes The cause of this disorder is unknown, but childhood events and genes may both be involved. It occurs more often in women than in men, although it may be more often di...
  8. HIV infection HIV infection
    HIV infection is a condition caused by the human immunodeficiency virus (HIV). The condition gradually destroys the immune system, which makes it harder for the body to fight infections. This article provides a general overview. For more detailed information, see: AIDS Acute HIV infection Asym...
  9. HLA-B27 antigen HLA-B27 antigen
    HLA-B27 is a blood test to look for specific protein found on the surface of white blood cells. The protein is called human leukocyte antigen B27 (HLA-B27). Human leukocyte antigens (HLAs) are proteins that help the body’s immune system tell the difference between its own cells and foreign, h...
  10. Hoarseness Hoarseness
    Hoarseness is having difficulty producing sound when trying to speak, or a change in the pitch or quality of the voice. The voice may sound weak, very breathy, scratchy, or husky. Considerations Hoarseness is usually caused by a problem in the vocal cords. Most cases of hoarseness are associated wi...
  11. Hodgkin’s lymphoma Hodgkin’s lymphoma
    Hodgkin's lymphoma is a cancer of lymph tissue found in the lymph nodes, spleen, liver, bone marrow, and other sites. Causes The first sign of this cancer is often an enlarged lymph node which appears without a known cause. The disease can spread to nearby lymph nodes. Later it may spread to the sp...
  12. Holter monitor (24h) Holter monitor (24h)
    A Holter monitor is a machine that continuously records the heart's rhythms. The monitor is usually worn for 24 - 48 hours during normal activity. See also ECG. How the Test is Performed Electrodes (small conducting patches) are stuck onto your chest and attached to a small recording monitor. You c...
  13. Home pharmacy Home pharmacy
    For common minor symptoms and illnesses, over-the-counter medicines are available. Always follow the manufacturer's directions and warnings when using these products. If you have any questions, consult with your doctor before starting a new over-the-counter drug. All medications lose their effective...
  14. Home vision tests Home vision tests
    Home vision tests measure the ability to see fine detail. How the Test is Performed There are three vision tests that can be done at home: Amsler grid, distance vision, and near vision testing. AMSLER GRID TEST: This test helps detect macular degeneration, a disease that may cause blurred vision, d...
  15. Homocystinuria Homocystinuria
    Homocystinuria is an inherited disorder that affects the metabolism of the amino acid methionine. Causes Homocystinuria is inherited in families as an autosomal recessive trait. This means that the child must inherit the non-working gene from both parents to be seriously affected. Homocystinuria ha...