Category: H

  • Hyperparathyroidism

    Physical condition created by excessive amounts of parathyroid hormone. Primary hyperparathyroidism is caused by dysfunction of the parathyroid glands. This results in over-secretion of parathyroid hormone (PTH), leading to increased bone resorption and subsequent hypercalcemia, as well as reduced renal clearance of calcium and increased intestinal calcium absorption. Over-secretion of parathyroid hormone by the parathyroid…

  • Hyperparakeratosis

    An abnormal increase in the thickness of the keratin layer of the epithelium with persistence of nuclei or nuclear remnants. The stratum granulosum is seldom seen in hyperparakeratosis. Also known as parakeratosis.  

  • Hyperostosis

    A limited overgrowth of bone in one particular area. Excessive overgrowth on the outside surface of bone, especially the frontal bone. Excessive enlargement of the outer layer of a bone. The condition is harmless and is usually recognized as an incidental finding on X-ray. It commonly affects the frontal bone of the skull (hyperostosis frontalis).…

  • Hyperosmia

    An uncharacteristically increased sensitivity to odors. Heightened sense of smell.  

  • Hyperorthokeratosis

    An abnormal increase in the thickness of the orthokeratin layer (stratum corneum) of the epithelium. The subjacent stratum granulosum may be prominent.  

  • Hyperocclusion

    Premature or abnormal contact of opposing teeth, creating excessive or traumatic force.  

  • Hypermineralization

    Abnormal quantities of mineral elements in calcified tissue.  

  • Hyperkeratosis

    Hyperkeratosis

    Extreme development of keratin by epithelial cells. Results when an excess of proteins called keratins are produced, leading to thickening of the skin. An overdevelopment of the hard, homy layer of the skin. A condition in which the outer layer of the skin becomes unusually thickened. Thickening of the skin. Hyperkeratosis is the result of…

  • Hyperglycemia

    Abnormally increased blood sugar. Usually increased or high blood glucose when typically >11.1 mmol/L; however, symptoms may not be noticeable until even higher values are reached, such as 15–20 mmol/L. A patient with a consistent range between ~5.6 and ~7 mmol/L is considered hyperglycemic, values >7 mmol/L are considered a state of diabetes. Chronic levels…

  • Hyperesthesia

    A dysesthesia consisting of increased sensitivity, particularly a painful sensation from a normally painless touch stimulus. Increased sensitivity to stimulation such as pressure or touch, resulting in pain. An increased sensitivity to sensory stimuli, such as pain or touch.