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  2. Lymphocytic pleocytosis - Wikipedia

    en.wikipedia.org/wiki/Lymphocytic_pleocytosis

    Under normal conditions, there are usually less than 5 white blood cells per μL of CSF. In a pleocytic setting, the number of lymphocytes can jump to more than 1,000 cells per μL. Increases in lymphocyte count are often accompanied by an increase in cerebrospinal protein concentrations in addition to pleocytosis of other types of white blood ...

  3. Vasculitis - Wikipedia

    en.wikipedia.org/wiki/Vasculitis

    Laboratory tests of blood or body fluids are performed for patients with active vasculitis. Their results will generally show signs of inflammation in the body, such as increased erythrocyte sedimentation rate (ESR), elevated C-reactive protein (CRP), anemia, increased white blood cell count and eosinophilia.

  4. Cutaneous small-vessel vasculitis - Wikipedia

    en.wikipedia.org/wiki/Cutaneous_small-vessel...

    Cutaneous small-vessel vasculitis (CSVV) is inflammation of small blood vessels, usually accompanied by small lumps beneath the skin. [1]: 831 [2] The condition is also known as hypersensitivity vasculitis, cutaneous leukocytoclastic vasculitis, hypersensitivity angiitis, cutaneous leukocytoclastic angiitis, cutaneous necrotizing vasculitis and cutaneous necrotizing venulitis, [3]

  5. Neurosyphilis - Wikipedia

    en.wikipedia.org/wiki/Neurosyphilis

    CSF white blood cell count is often elevated in the early stages of neurosyphilis, ranging from about 50 to 100 white blood cells/mcL with a lymphocyte predominance. Cell counts are typically lower in late syphilis. Regardless of syphilis disease stage, the absence of CSF white blood cells rules out neurosyphilis. [citation needed]

  6. Cerebrospinal fluid - Wikipedia

    en.wikipedia.org/wiki/Cerebrospinal_fluid

    [34] [36] The presence of red blood cells and xanthochromia may indicate subarachnoid hemorrhage; whereas central nervous system infections such as meningitis, may be indicated by elevated white blood cell levels. [36] A CSF culture may yield the microorganism that has caused the infection, [34] or PCR may be used to identify a viral cause. [36]

  7. Glymphatic system - Wikipedia

    en.wikipedia.org/wiki/Glymphatic_system

    Paravascular spaces are CSF-filled channels formed between the brain blood vessels and leptomeningeal sheathes that surround cerebral surface vessels and proximal penetrating vessels. Around these penetrating vessels, paravascular spaces take the form of Virchow-Robin spaces. Where the Virchow-Robin spaces terminate within the brain parenchyma ...

  8. Cerebral vasculitis - Wikipedia

    en.wikipedia.org/wiki/Cerebral_vasculitis

    It affects all of the vessels: very small blood vessels (capillaries), medium-size blood vessels (arterioles and venules), or large blood vessels (arteries and veins). If blood flow in a vessel with vasculitis is reduced or stopped, the parts of the body that receive blood from that vessel begins to die, resulting in a stroke .

  9. Meningitis - Wikipedia

    en.wikipedia.org/wiki/Meningitis

    The CSF sample is examined for presence and types of white blood cells, red blood cells, protein content and glucose level. [8] Gram staining of the sample may demonstrate bacteria in bacterial meningitis, but absence of bacteria does not exclude bacterial meningitis as they are only seen in 60% of cases; this figure is reduced by a further 20% ...