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  2. Lymphocytic pleocytosis - Wikipedia

    en.wikipedia.org/wiki/Lymphocytic_pleocytosis

    A viral infection can directly cause encephalitis or trigger a cascade ending in autoimmunity, with both mechanisms eventually leading to a rise in CSF lymphocyte concentration. [citation needed] For patients with Herpes simplex virus, more than 90% are found to have lymphocytic pleocytosis of varying levels. [5]

  3. Human betaherpesvirus 7 - Wikipedia

    en.wikipedia.org/wiki/Human_betaherpesvirus_7

    The trademark indication of HHV-7 infection at the cellular level is the presence of aforementioned syncytia. It is thought that these cells form via polyploidization resulting from a dysregulation of cyclin dependent kinase cdc2 and cyclin B. Giant cells form when the cell cycle is disrupted and accumulate between the G 2 and M phase. [28]

  4. Lymphocytosis - Wikipedia

    en.wikipedia.org/wiki/Lymphocytosis

    Lymphocytosis is usually detected when a complete blood count is obtained. If not provided the lymphocyte count can be calculated by multiplying the total white blood cell (WBC) count by the percentage of lymphocytes found in the differential count. [13] The lymphocyte count can also be directly measured by flow cytometry. [citation needed]

  5. Epstein–Barr virus–associated lymphoproliferative diseases (also abbreviated EBV-associated lymphoproliferative diseases or EBV+ LPD) are a group of disorders in which one or more types of lymphoid cells (a type of white blood cell), i.e. B cells, T cells, NK cells, and histiocytic-dendritic cells, are infected with the Epstein–Barr virus (EBV).

  6. Lymphoproliferative disorders - Wikipedia

    en.wikipedia.org/wiki/Lymphoproliferative_disorders

    Lymphoproliferative disorders are a set of disorders characterized by the abnormal proliferation of lymphocytes into a monoclonal lymphocytosis. The two major types of lymphocytes are B cells and T cells, which are derived from pluripotent hematopoietic stem cells in the bone marrow.

  7. Herpes simplex encephalitis - Wikipedia

    en.wikipedia.org/wiki/Herpes_simplex_encephalitis

    About 90% of cases of herpes encephalitis are caused by herpes simplex virus-1 (HSV-1), the same virus that causes cold sores. According to a 2006 estimate, 57% of American adults were infected with HSV-1, [ 3 ] which is spread through droplets, casual contact and sometimes sexual contact, though most infected people never have cold sores.

  8. Autoimmune lymphoproliferative syndrome - Wikipedia

    en.wikipedia.org/wiki/Autoimmune_lymphoprolife...

    It affects lymphocyte apoptosis. [2] It is a rare genetic disorder of abnormal lymphocyte survival caused by defective Fas mediated apoptosis. [3] Normally, after infectious insult, the immune system down-regulates by increasing Fas expression on activated B and T lymphocytes and Fas-ligand on activated T lymphocytes.

  9. Genital herpes - Wikipedia

    en.wikipedia.org/wiki/Genital_herpes

    Genital herpes is a herpes infection of the genitals caused by the herpes simplex virus (HSV). [1] Most people either have no or mild symptoms and thus do not know they are infected. [ 1 ] When symptoms do occur, they typically include small blisters that break open to form painful ulcers . [ 1 ]