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Drugs and diseases reference index

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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «H»:

  1. Human T-lymphotropic virus type I Human T-lymphotropic virus type I
    Human T-lymphotropic virus type I: (HTLV-I) A virus often referred to simply as the human T-lymphotropic virus (HTLV). HTLV-II stands for human T-lymphotropic virus type II, which is closely related to HTLV-I. HTLV-III is now known as the human immunodeficiency virus or HIV....
  2. Human T-lymphotropic virus type III Human T-lymphotropic virus type III
    Human T-lymphotropic virus type III: An obsolete term for the human immunodeficiency virus, now commonly called HIV....
  3. Humerus Humerus
    Humerus: The long bone in the arm which extends from the shoulder to the elbow. ...
  4. Humidifier Humidifier
    Humidifier: Anything, usually a machine today, that adds moisture to the air....
  5. Humidifier fever Humidifier fever
    Humidifier fever: A form of sick building syndrome that usually develops on Monday or the first workday of the week. The hallmark of the disease is the sudden onset of fever. Other features may include muscle aches and pains and mild shortness of breath. Humidifier fever can be caused by a number ...
  6. Humor Humor
    Humor: In medicine, humor refers to a fluid (or semifluid) substance. Thus, the aqueous humor is the fluid normally present in the front and rear chambers of the eye. The humors ran through an ancient theory that held that health came from balance between the bodily liquids. These liquids were term...
  7. Humor, aqueous Humor, aqueous
    Humor, aqueous: In medicine, humor refers to a fluid (or semifluid) substance. Thus, the aqueous humor is the fluid normally present in the front and rear chambers of the eye. It is a clear, watery fluid that flows between and nourishes the lens and the cornea; it is secreted by the ciliary pro...
  8. Humoral Humoral
    Humoral: Pertaining to elements in the blood or other body fluids. In medicine, humor refers to a fluid (or semifluid) substance. Thus, the aqueous humor is the fluid normally present in the front and rear chambers of the eye. The humors were part of an ancient theory that held that health came from...
  9. Humoralism Humoralism
    Humoralism: In medicine, humor refers to a fluid (or semifluid) substance. Thus, the aqueous humor is the fluid normally present in the front and rear chambers of the eye. The humors were part of an ancient theory that held that health came from balance between the bodily liquids. These liquids wer...
  10. Humorism Humorism
    Humorism: In medicine, humor refers to a fluid (or semifluid) substance. Thus, the aqueous humor is the fluid normally present in the front and rear chambers of the eye. The humors were part of an ancient theory that held that health came from balance between the bodily liquids. These liquids were ...
  11. Hump, dowager Hump, dowager
    Hump, dowager: An outward curvature of the vertebrae of neck, creating a hump at the back of the neck, once thought to be a characteristic deformity of older women. A dowager was a woman of high social rank whose husband was dead but who had a title (such as duchess) and property because of her mar...
  12. Hunter syndrome Hunter syndrome
    Hunter syndrome: A genetic metabolic disorder that arises from deficiency of the enzyme iduronate sulfatase, resulting in tissue deposits of molecules called mucopolysaccharides. The characteristic features of Hunter syndrome include dwarfism, bone deformities, a thickened coarse face, hepatosplenom...
  13. huntingtin huntingtin
    Huntingtin: The name of the gene responsible for Huntington disease (HD) and of the protein encoded by that gene. The molecular basis of HD is an increase in the length of a CAG triplet repeat (or 'polyglutamine') within the huntingtin gene. The gene is on chromosome 4p16.3. The huntingtin mutation ...
  14. Huntington disease Huntington disease
    Huntington disease: An hereditary disorder with mental and physical deterioration leading to death. Although characterized as an "adult-onset" disease, it can affect children as well. Huntington disease describes an autosomal dominant pattern of inheritance with high penetrance (a hig...
  15. Hurler syndrome Hurler syndrome
    Hurler syndrome: An inherited error of metabolism in which there is deficiency of the enzyme alpha-L-iduronidase which normally breaks down molecules called mucopolysaccharides. Without the activity of this enzyme, there is an abnormal accumulation of mucopolysaccharides in the tissues of the body...