The condition is caused primarily by an infection or a recent infection. It is also possible that the body is not capable of making or producing enough lymphocytes.
People at highest risk for lymphocytopenia have one of the diseases, conditions, or factors that can cause a low lymphocyte count. This includes people who have:  Causes of Lymphopenia. Lymphopenia is a common side effect of chemotherapeutic and immunosuppressive drugs, as well as immunosuppression itself (e.g., AIDS). Some bone marrow malignancies also cause lymphopenia. To research the causes of Lymphopenia, consider researching the causes of these these diseases that may be similar, or associated with Lymphopenia: 1  Pancytopenia. 2  T lymphocytopenia. 3  B lymphocytopenia. 4  NK lymphocytopenia. 5  Chemotherapy. If all three kinds of lymphocytes are suppressed, then the term is used without further qualification. 1  In T lymphocytopenia, there are too few T lymphocytes, but normal numbers of other lymphocytes. 2  It causes, and manifests as, a T cell deficiency. 1 In B lymphocytopenia, there are too few B lymphocytes, but possibly normal numbers of other lymphocytes. 2  It causes, and manifests as, a humoral immune deficiency. 3  This is usually caused by medications that suppress the immune system. Lymphocytopenia is a condition marked by an abnormally low level of lymphocytes in the blood. Lymphocytes are a specific type of white blood cell with important functions in the immune system. Lymphocytes constitute only a fraction of the body's white blood cells, and a decline in their number may not produce any symptoms. A patient who has lymphocytopenia may have symptoms of the condition responsible for the depressed level of lymphocytes. Lymphocytopenia, or lymphopenia, is the condition of having an abnormally low level of lymphocytes in the blood. Lymphocytes are a white blood cell with important functions in the immune system. The opposite is lymphocytosis, which refers to an excessive level of lymphocytes. Lymphocytopenia may be present as part of a pancytopenia, when the total numbers of all types of blood cells are reduced. 1 In B lymphocytopenia, there are too few B lymphocytes, but possibly normal numbers of other lymphocytes. 2  It causes, and manifests as, a humoral immune deficiency. 3  This is usually caused by medications that suppress Acquired Causes. Many acquired diseases, conditions, and factors can cause lymphocytopenia. Examples include: 1  Infectious diseases, such as AIDS, viral hepatitis, tuberculosis, and typhoid fever. 2  Autoimmune disorders, such as lupus.  Lymphopenia Definition. Lymphopenia or lymphocytopenia is a condition that involves a decrease in the level of serum lymphocytes. The lymphocytes are essential in the part of immunity or in protecting the body from infections. Many conditions are associated with lymphopenia. Lymphopenia Causes. The condition is caused primarily by an infection or a recent infection. It is also possible that the body is not capable of making or producing enough lymphocytes. There is also a possibility that a person’s lymph nodes trap the necessary amount of lymphocytes Lymphocytopenia is an abnormally low number of lymphocytes (a type of white blood cell) in the blood. Many disorders can decrease the number of lymphocytes in the blood, but AIDS and undernutrition are the most common. People may have no symptoms, or they may have fever and other symptoms of an infection. A blood sample is used to make the diagnosis of lymphocytopenia, but a sample of bone marrow or lymph node may be needed to determine the cause. AIDS and undernutrition are the most common causes of lymphocytopenia. There are three types of lymphocytes: B lymphocytes (B cells), T lymphocytes (T cells), and natural killer cells (NK cells), all of which have important functions in the immune system.
http://www.nhlbi.nih.gov/health/health-topics/topics/lym/atrisk http://www.rightdiagnosis.com/l/lymphopenia/causes.htm https://en.wikipedia.org/wiki/Lymphocytopenia http://medical-dictionary.thefreedictionary.com/Lymphocytopenia https://en.wikipedia.org/wiki/Lymphocytopenia http://www.nhlbi.nih.gov/health/health-topics/topics/lym/causes http://healthosphere.com/lymphopenia-lymphocytopenia/ http://www.merckmanuals.com/home/blood-disorders/white-blood-cell-disorders/lymphocytopenia
causes of lymphopenia