Pachymeningitis as a manifestation of ANCA-associated vasculitis: a care report and literature review.

Pachymeningitis is a rare cause of headache characterized by dura mater thickening with various origins. We present a 67-year-old male with cranial and spinal pachymeningitis and MPO-ANCA-associated vasculitis, which is considered as the cause of pachymeningitis of this patient. After revision of other 32 reported cases, our study suggested cranial and spinal pachymeningitis could be a manifestation of ANCA-associated vasculitis. Thus, it is important to screen other manifestations of ANCA-associated vasulitis as soon as pachymeningitis was suspected.