Calabrese and Mallek listed criteria for the diagnosis of Primary Angiitis of the Central Nervous System (PACNS). The authors are from the Cleveland Clinic.
Requirement: a complete and thorough evaluation of the patient (clinical, laboratory, etc)
Criteria for the diagnosis of PACNS - all of the following:
(1) presence of unexplained neurologic deficit(s)
(2) presence of an arteritic process in the CNS documented by one or both of the following:
(2a) cerebral angiography
(2b) histologic evidence on biopsy
(3) exclusion of other explanations
(3a) no evidence of a systemic vasculitis
(3b) no evidence of any other condition that can explain the findings
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