Reversible Cerebral Vasoconstriction Syndromes (RCVS)

Distinguishing RCVS from PACNS
Clinical differences can be ‘diagnostic’
symptom onset acute in RCV, insidious in vasculitis
Clinical distinction can be difficult especially in the
acute stages (i.e., before the tempo of the disease
is established, and without serial vascular imaging).
Neuroimaging (lesion topography) may be helpful,
but should be used in conjunction with the clinical
features and lab. results to discriminate between
these conditions.