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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. 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 ...

  4. Cerebrospinal fluid - Wikipedia

    en.wikipedia.org/wiki/Cerebrospinal_fluid

    CSF is mostly produced by the lateral ventricles. [18] CSF is also produced by the single layer of column-shaped ependymal cells which line the ventricles; by the lining surrounding the subarachnoid space; and a small amount directly from the tiny spaces surrounding blood vessels around the brain. [2] CSF is produced by the choroid plexus in ...

  5. 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.

  6. 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]

  7. 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.

  8. Intracranial hemorrhage - Wikipedia

    en.wikipedia.org/wiki/Intracranial_hemorrhage

    Dural venous sinus thrombosis (DVST) and cortical venous thrombosis (CVT) commonly presents with headache, increased intracranial pressure, or seizures. DVST is more common than CVT. DVST are frequently caused by infections in the skull base, dehydration, thrombophilia, meningioma, and other dural tumours. [3]

  9. Meningitis - Wikipedia

    en.wikipedia.org/wiki/Meningitis

    The blood–brain barrier becomes more permeable, leading to "vasogenic" cerebral edema (swelling of the brain due to fluid leakage from blood vessels). Large numbers of white blood cells enter the CSF, causing inflammation of the meninges and leading to "interstitial" edema (swelling due to fluid between the cells). In addition, the walls of ...