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Drugs and diseases reference index

Drugs and diseases reference index
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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «H»:

  1. Hypoparathyroidism Hypoparathyroidism
    Hypoparathyroidism: Underfunction of the parathyroid glands with deficient production of the hormone parathormone which leads to low blood calcium (hypocalcemia). The parathyroid glands are located adjacent to the thyroid gland. They may be missing due to a birth defect, impaired by autoimmune disea...
  2. Hypopharyngeal diverticulum Hypopharyngeal diverticulum
    Hypopharyngeal diverticulum: See: Zenker diverticulum....
  3. Hypophosphatemia Hypophosphatemia
    Hypophosphatemia: A less than normal blood level of phosphate. The opposite of hyperphosphatemia. ...
  4. Hypopigmented Hypopigmented
    Hypopigmented: Underpigmented. ...
  5. Hypoplasia Hypoplasia
    Hypoplasia: Underdevelopment or incomplete development of a tissue or organ. For example, there can be hypoplasia (underdevelopment) of the enamel of the teeth. Hypoplasia is less drastic than aplasia where there is no development at all....
  6. Hypoplasia of the thymus and parathyroids Hypoplasia of the thymus and parathyroids
    Hypoplasia of the thymus and parathyroids: See: DiGeorge syndrome....
  7. Hypoplasia, syndromatic hepatic ductular Hypoplasia, syndromatic hepatic ductular
    Hypoplasia, syndromatic hepatic ductular: Also called Alagille syndrome or arteriohepatic dysplasia, this is a genetic disorder characterized by jaundice in the newborn period, liver disease with cholestasis, peripheral pulmonic stenosis and unusual face. Children with Alagille syndrome usually pres...
  8. Hypoplastic anemia-triphalangeal thumbs Hypoplastic anemia-triphalangeal thumbs
    Hypoplastic anemia-triphalangeal thumbs, Aase-Smith type: See: Aase-Smith syndrome II....
  9. Hypoplastic left heart syndrome Hypoplastic left heart syndrome
    Hypoplastic left heart syndrome: A form of congenital heart disease in which the whole left half of the heart (including the aorta , aortic valve, left ventricle and mitral valve) is underdeveloped (hypoplastic). Blood returning from the lungs has to flow through an opening in the wall betwee...
  10. Hypopnea Hypopnea
    Hypopnea: Literally, underbreathing. Breathing that is shallower or slower than normal. Hypopnea is distinct from apnea in which there is no breathing. Hypopnea comes from the Greek roots hypo- (meaning low, under, beneath, down, below normal) and pnoe (meaning breathing)....
  11. Hypoproteinemic hypertrophic gastropathy Hypoproteinemic hypertrophic gastropathy
    Hypoproteinemic hypertrophic gastropathy: See: Giant hypertrophic gastritis....
  12. Hyposmia Hyposmia
    Hyposmia: A reduced ability to smell and to detect odors. Some people have anosmia and can detect no odors....
  13. Hypospadias Hypospadias
    Hypospadias: A birth defect of the penis involving the urethra (the transport tube leading from the bladder to discharge urine outside the body). The urethra normally travels in the male through the full length of the penis so that the stream of urine comes from the urethral opening at the tip of ...
  14. Hypotension Hypotension
    Hypotension: Any blood pressure that is below the normal expected for an individual in a given environment. Hypotension is the opposite of hypertension (abnormally high blood pressure). Hypotension is a relative term because the blood pressure normally varies greatly with activity, age, medica...
  15. Hypotension, orthostatic Hypotension, orthostatic
    Hypotension, orthostatic: A temporary lowering of blood pressure (hypotension) due usually to suddenly standing up (orthostatic). Orthostatic hypotension may be experienced by healthy people -- it is more common in older people -- who rise quickly from a chair, especially after a meal, and have...