Category: H

  • Hypophosphataemia

    Abnormally low blood concentration of phosphate. Hypophosphatemia refers to a condition where there is an abnormally low level of phosphates in the blood. It can be associated with various conditions such as hyperparathyroidism, osteomalacia, rickets, and certain kidney abnormalities like Fanconi’s syndrome. Hypophosphatemia may lead to symptoms like fatigue, muscle weakness, premature breakdown of red…

  • Hypokalaemia

    Abnormally low plasma potassium. A deficiency of potassium in the blood. An abnormally low concentration of potassium in the blood. Hypokalemia refers to a condition characterized by a deficiency of potassium in the blood. Typically, it is caused by excessive fluid loss, such as in severe diarrhea. However, it can also result from the use…

  • Hypoglycaemic agents

    Drugs used to lower blood glucose concentrations in diabetes mellitus. These oral agents reduce the excessive amounts of glucose in the blood (hyperglycaemia) in people with type 2 (insulin-resistant) diabetes. Although the various drugs act differently, most depend on a supply of endogenous (secreted by the pancreas) insulin. Thus they are of no value in…

  • Hypoglycaemia

    Abnormally low concentration of plasma glucose; may result in loss of consciousness – hypoglycaemic coma. A low concentration of glucose in the blood. A deficiency of glucose in the blood the normal range being 3-5—5-5 mmol/l. It most commonly occurs in diabetic patients for example, after an excessive dose of insulin and heavy exercise, particularly…

  • Hypogeusia

    Diminished sense of taste. An early sign of marginal zinc deficiency, and potentially useful as an index of zinc status. Abnormal taste perception; loss of taste perception. A blunting of the sense of taste.  

  • Hypochlorhydria

    Partial deficiency of hydrochloric acid secretion in the gastric juice. Deficient hydrochloric acid in stomach juice. A condition in which there is not enough hydrochloric acid in the stomach. Decreased production of hydrochloric acid in the stomach. An insufficient secretion of hydrochloric acid from the digestive cells of the stomach lining. Insufficient hydrochloric acid in stomach…

  • Hypocalcaemia

    Low blood calcium, leading to vomiting and uncontrollable twitching of muscles if severe; may be due to underactivity of the parathyroid gland, kidney failure, or vitamin D deficiency. An unusually low amount of calcium in the blood, which can cause tetany. A serum concentration of calcium below the normal range (between 2.33 and 3.05 mmol…

  • Hypo

    Prefix meaning below the normal range, or abnormally low. Same as hypodermic syringe. An attack of hypoglycaemia, experienced, e.g., by people who are diabetic.  

  • Hypervitaminosis

    Toxicity due to excessively high intakes of vitamins. Symptoms of ill health resulting from the ingestion of large amounts of a vitamin. A condition caused by taking too many synthetic vitamins, especially Vitamins A and D. Clinical condition resulting from excessive intake of certain vitamins, such as vitamin A and vitamin D. A condition due…

  • Hypertonic

    A solution more concentrated than the body fluids. A solution with a higher osmotic pressure (greater solute concentration) than a standard solution, usually water or physiological saline, hypotonic. Referring to a solution which has a higher osmotic pressure than another specified solution. Referring to a muscle which is under unusually high tension. Hypertonic refers to…