Mindblown: a blog about philosophy.
-
Hypertension
Persistent, sustained high blood pressure of 140/90 mmHg or above. Hypertension becomes a surgical risk factor if the condition is uncontrolled. Commonly referred to as “high blood pressure” or HTN, is a medical condition in which the arterial blood pressure is chronically elevated. Persistently high arterial blood pressure. Currently accepted threshold levels are 140 mm…
-
Hypersensitivity
An exaggerated or inappropriate immune response to a pathogen or antigen that is damaging to the host. Classified as immediate (anaphylactic), antibody dependent (cytotoxic), immune complex (Arthus), and delayed (T cell mediated). Altered reactivity to an antigen, which can result in pathologic reactions upon subsequent exposure to that particular antigen. Heightened responsiveness induced by allergic…
-
Hyperplastic tissue
Surplus tissue that is often caused as a response to chronic irritation that stimulates overproduction of the cells in the tissue.
-
Hyperplasia
Excessive enlargement of a tissue or structure due to an increase in the number of cells. Increase in the number of cells produced in an organ or body tissues. Growth in a tissue or organ through an increase in the number of cells. Over proliferation of normal cells within a normal tissue structure. Abnormal multiplication…
-
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.
Got any book recommendations?