Acute illness
Acute illness: A disease with an abrupt onset and, usually, a short course.
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- Acute kidney failure
Acute renal failure.
- Acute leukemia
Acute leukemia: Cancer of the blood cells that characteristically comes on suddenly and, if not treated, progresses quickly. In acute leukemia, the leukemic cells are not able to mature properly.
- Acute lymphoblastic leukemia
Acute lymphoblastic leukemia (ALL): An acute (sudden onset), rapidly progressing form of leukemia that is characterized by the presence in the blood and bone marrow of large numbers of unusually immature white blood cells destined to become lymphocytes. Acute lymphoblastic leukemia is also called acute lymphocytic leukemia and is abbreviated ALL (spoken not as the […]
- Acute membranous gingivitis
Acute membranous gingivitis: A progressive and painful infection of the mouth and throat due to the spread of infection from the gums. Symptoms include ulceration, swelling, and sloughing off of dead tissue from the mouth and throat. Certain germs (including fusiform bacteria and spirochetes) have been thought to be involved, but the actual cause is […]
- Acute mountain sickness (AMS)
Acute mountain sickness (AMS): Acute mountain sickness (AMS) is the effect on the body of being in a high altitude environment. AMS is common at high altitudes, that is above 8,000 feet (2,440 meters). Three-quarters of people have mild symptoms of AMS over 10,000 feet (3,048 meters). The occurrence of AMS depends on the altitude, […]