Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «U»:
Uroporphyrinogen decarboxylase deficiency
Uroporphyrinogen decarboxylase deficiency: See: UROD deficiency....
Urothelium: The lining of the ureters, urinary bladder, and urethra....
Urticaria: Another name for the hives. Raised, itchy areas of skin that are usually a sign of an allergic reaction. Hives can be rounded or flat-topped but are always elevated above the surrounding skin. They reflect circumscribed dermal edema (local swelling of the skin). The hives are usually well...
Urticaria pigmentosa: The most common form of mastocytosis consisting of small aggregations of mast cells within characteristic salmon-brown patches of ski which itch when stroked and be filled with fluid. The condition occurs occurring primarily in children and clears spontaneously with adolescenc...
US Department of Agriculture
US Department of Agriculture: A department of the executive branch of the US government founded in 1862 by President Abraham Lincoln -- he called it the "people's Department" -- that is devoted to agriculture in its broadest sense.
The mission of the US Department of Agriculture (as stated on its In...
USDA: US Department of Agriculture....
USFDA: The United States Food and Drug Administration (best known as the FDA) is an agency within the U.S. Public Health Service, which is a part of the Department of Health and Human Services.
Background: The FDA regulates over $1 trillion worth of products, which account for 25 cents of every do...
Usher syndrome: A genetic disorder characterized by hearing impairment and an eye disorder called retinitis pigmentosa in which vision worsens over time. Some people with Usher syndrome also have balance problems.
It is the most common disease that diminishes both hearing and vision. More than hal...
USP: United States Pharmacopeia....
USPHS (United States Public Health Service)
USPHS (United States Public Health Service): The agency responsible for the public health of the American people. The Public Health Service (PHS) administers a number of critically important health agencies including the Food and Drug Administration (FDA), the Centers for Disease Control (CDC), and...
ut dict.: Abbreviation meaning "as directed" (from the Latin "ut dictum", as directed). One of a number of hallowed abbreviations of Latin terms that have traditionally been used in prescriptions.
a.c. = before meals (from "ante cibum", before meals)
b.i.d. = twice a day (from "bis in...
Uterine bleeding: See: Menstruation. See also Menometrorrhagia; Menorrhagia; Metrorrhagia....
Uterine cancer: Cancer of the womb (the uterus). Also called endometrial cancer. Cancer of the uterus occurs most often in women between the ages of 55 and 70 years. It accounts for about 6% of cancer in women. Women at elevated risk for uterine cancer include those who are obese, who have few or no...
Uterine contraction: The tightening and shortening of the uterine muscles.
During labor, contractions accomplish two things: (1) they cause the cervix to thin and dilate (open); and (2) they help the baby to descend into the birth canal.
Uterine contractions also occur during the monthly menstrual c...
Uterine fibroids: Uterine fibroids are benign tumors of the uterus (the womb) and the single most common indication for hysterectomy.
Uterine fibroids can be present, but be inapparent. However, they are clinically apparent in up to 25% of all women and cause significant morbidity (disease), in...