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  2. Drug rash with eosinophilia and systemic symptoms - Wikipedia

    en.wikipedia.org/wiki/Drug_rash_with_eosinophil...

    The symptoms of DRESS syndrome usually begin 2 to 6 weeks but uncommonly up to 8–16 weeks after exposure to an offending drug. Symptoms generally include fever, an often itchy rash which may be morbilliform or consist mainly of macules or plaques, facial edema (i.e. swelling, which is a hallmark of the disease), enlarged and sometimes painful lymph nodes, and other symptoms due to ...

  3. Lymphocytosis - Wikipedia

    en.wikipedia.org/wiki/Lymphocytosis

    Lymphocytosis is a feature of infection, particularly in children. In the elderly, lymphoproliferative disorders, including chronic lymphocytic leukemia and lymphomas, often present with lymphadenopathy and a lymphocytosis. [citation needed] Causes of absolute lymphocytosis include:

  4. Lymphoproliferative disorders - Wikipedia

    en.wikipedia.org/wiki/Lymphoproliferative_disorders

    The T cell variations are usually caused by the prolonged use of T cell suppressant drugs, such as sirolimus, tacrolimus, or ciclosporin. [2] The Epstein-Barr virus , which infects >90% of the world population, is also a common cause of these disorders, being responsible for a wide range of non-malignant, pre-malignant, and malignant Epstein ...

  5. Acute generalized exanthematous pustulosis - Wikipedia

    en.wikipedia.org/wiki/Acute_generalized...

    In vitro tests, including mixed lymphocyte reaction tests in which the response of individuals' blood mononuclear cells to suspect drugs and ELISPOT tests in which specific drug-reactive lymphocytes or their drug-induced release of AGEP mediators (e.g. interferon-γ interleukin 4, or granulysin) are measured have likewise not been broadly ...

  6. Lymphocytic pleocytosis - Wikipedia

    en.wikipedia.org/wiki/Lymphocytic_pleocytosis

    Many cases point to a viral infection as the root cause of pleocytosis, in which the immune system produces antibodies against neuronal and vascular antigens. This evidence possibly connects it to viral meningitis and Mollaret's disease. [3] Certain non-viral infections, such as Lyme disease have also been considered possible causes. In some ...

  7. Hemophagocytic lymphohistiocytosis - Wikipedia

    en.wikipedia.org/wiki/Hemophagocytic_lymphohist...

    It is a life-threatening disease of severe hyperinflammation caused by uncontrolled proliferation of benign lymphocytes and macrophages that secrete high amounts of inflammatory cytokines. It is classified as one of the cytokine storm syndromes. There are inherited and non-inherited (acquired) causes of HLH.

  8. Cytokine release syndrome - Wikipedia

    en.wikipedia.org/wiki/Cytokine_release_syndrome

    Cytokine reaction syndrome may also be induced by certain medications, such as the CD20 antibody rituximab and the CD19 CAR T cell tisagenlecleucel. The experimental drug TGN1412 —also known as Theralizumab—caused extremely serious symptoms when given to six participants in a Phase I trial . [ 2 ]

  9. Leukocytosis - Wikipedia

    en.wikipedia.org/wiki/Leukocytosis

    Leukocytosis is a condition in which the white cell count is above the normal range in the blood. [1] [2] It is frequently a sign of an inflammatory response, [3] most commonly the result of infection, but may also occur following certain parasitic infections or bone tumors as well as leukemia.