Infectious Vasculitis

A number of bacteria and fungi that infect the nervous system often produce an acute inflammatory, necrotizing, or chronic granulomatous vasculitis of the cerebral blood vessels. Spirochetes may infect the blood vessels: Treponema pallidum in neurosyphilis and Borrelia burgdorferi in Lyme disease. HIV-associated vasculitis is prone to cause ischemic episodes in both adults and children. Vasculitis of the large cerebral arteries accounts for the hemiplegia that develops contralaterally to a facial or ocular herpes zoster infection. Post varicella vasculopathy is a potential risk for stroke in children.

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