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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. Hiatus hernia Hiatus hernia
    Hiatus hernia (hiatal hernia): An anatomical abnormality in which part of the stomach protrudes up through the diaphragm into the chest. Normally, the esophagus passes down through the chest, crosses the diaphragm, enters the abdomen through a hole in the diaphragm called the esophageal hiatus an...
  2. HIB HIB
    HIB: Abbreviation for Haemophilus influenzae type B....
  3. HIB immunization HIB immunization
    HIB immunization: This immunization is designed to prevent diseases caused by Haemophilus influenzae type B (HIB), a bacteria responsible for a range of serious "invasive" diseases including meningitis with potential brain damage and epiglottitis with airway obstruction. More than 90% of all H...
  4. Hibernation reaction Hibernation reaction
    Hibernation reaction: See: SAD....
  5. Hiccough Hiccough
    Hiccough: A hiccough is an extraordinary type of breathing movement involving a sudden intake of air (inspiration) due to an involuntary contraction of the diaphragm accompanied by closure of the vocal apparatus (glottis) of the larynx. A hiccough is also called a hiccup. The abrupt inspiration is t...
  6. Hiccups Hiccups
    Hiccups: A hiccup is an extraordinary type of respiratory movement involving a sudden inspiration (intake of air) due to an involuntary contraction of the diaphragm accompanied by closure of the glottis (the vocal apparatus of the larynx). The abrupt inspiration is the result of a sudden contra...
  7. Hidradenitis suppurativa Hidradenitis suppurativa
    Hidradenitis suppurativa: This is an illness characterized by multiple abscesses that form under the arm pits and in the groin area....
  8. Hidrosis Hidrosis
    Hidrosis: Sweating, the production of perspiration. Hidrosis is the Greek word for sweating....
  9. Hidrotic Hidrotic
    Hidrotic: Pertaining to hidrosis, sweating, the production of perspiration. Hidrotic ectodermal dysplasia is the form of this hereditary disease in which the patient can sweat, as opposed to anhidrotic ectodermal dysplasia in which the patient is unable to sweat....
  10. High altitude High altitude
    High altitude: Altitude sickness occurs at high altitude. So what is high altitude? Altitude is defined on the following scale: High altitude: 8,000 - 12,000 feet (2,438 - 3,658 meters); Very high altitude: 12,000 - 18,000 feet (3,658 - 5,487 meters); and Extremely high altitude: 18,...
  11. High altitude pulmonary edema High altitude pulmonary edema
    High altitude pulmonary edema: Known for short as HAPE, the accumulation in the lungs of extravascular fluid (fluid outside of blood vessels) at high altitude, a consequence of rapid altitude ascent, especially when that ascent is accompanied by significant exercise. HAPE leads to dyspnea (shortne...
  12. High blood pressure High blood pressure
    High blood pressure: Also known as hypertension, high blood pressure is, by definition, a repeatedly elevated blood pressure exceeding 140 over 90 mmHg -- a systolic pressure above 140 with a diastolic pressure above 90. Chronic hypertension is a "silent" condition. Stealthy as a cat, it c...
  13. High blood sugar High blood sugar
    High blood sugar: An elevated level of the sugar glucose in the blood. Also called hyperglycemia. High blood sugar is a finding in a number of conditions, most notably diabetes mellitus. Elevated blood glucose leads to spillage of glucose into the urine (glucosuria) so that the urine is sugary. (The...
  14. High protein diet High protein diet
    High protein diet: A high protein diet is a type of weight loss plan that emphasizes consumption of high-protein-containing foods. There are many different kinds of high protein diets. Many high protein diets may be risky for overall health because they stress the consumption of meats and high pr...
  15. High-grade lymphoma High-grade lymphoma
    High-grade lymphoma: A lymphoma that grows and spreads quickly but has a better response to anticancer drugs than that seen with low-grade lymphomas. High-grade lymphomas include large cell, immunoblastic, lymphoblastic, and small noncleaved cell lymphomas. Also called an aggressive lymphoma....