Central nervous system Vasculitis due to infectious diseases

Varicella zoster virus may cause vasculitis or vasculopathy, and positive polymerase chain reactions for varicella zoster virus deoxyribonucleic acid in the cerebrospinal fluid and/or the intrathecal synthesis of antibodies to the varicella zoster virus suggest these diagnoses. Meningovascular syphilis may involve the middle cerebral artery and basilar artery and may cause a stroke. Aspergillus is vasoinvasive and may cause hemorrhagic infarction by forming an intravascular thrombus.