Reduction in the number of leukocytes in the blood below 5000 per cubic mm.
A decrease in the number of circulating white blood cells.
A decrease below normal levels in the number of white blood cells (leukocytes), most commonly provoked by certain drugs, such as anticonvulsants. Also known as neutropenia.
An abnormally low number of leukocytes (white blood cells) in the blood.
Abnormal decrease in the number of circulating white blood cells.
An abnormally low number of white blood cells.
Abnormal decrease in the number of leukocytes in the blood, to fewer than 5,000 per cubic millimeter; it may affect one type or all types of white blood cells. Leukopenia may occur as an adverse drug reaction or as a result of radiation exposure, poisoning, or other abnormal condition (e.g., aplastic anemia).
A decrease of white blood cells in the circulation.
An abnormally low number of white blood cells circulating in the blood; commonly known as a low white blood cell count. Leukopenia is diagnosed by taking a sample of blood and counting the number of white blood cells per microliter (a millionth [1/1,000,000] of a liter). The normal white blood cell count is 4,000 to 10,000 per microliter of blood. Leukopenia usually occurs when white blood cells are used up at a rapid rate and production of new cells falls behind. This happens most commonly in response to chemotherapy; cancers affecting the bone marrow; enlargement of the spleen; infection; autoimmune diseases; and nutritional deficiencies.
A reduction in the number of white blood cells (leukocytes) in the blood.
Abnormal decrease of white blood cells usually below 5000/mm³. A great number of drugs may cause leukopenia, as can failure of the bone marrow.