In patients with reversible cerebral vasoconstriction syndrome (RCVS), the absence of thunderclap headache (TCH) at onset was associated with a higher risk of neurological complications.
Why this matters
RCVS is a rare condition causing sudden, severe headaches as a result of multisegmental cerebral vasoconstriction. It typically presents with TCH.
Identification of risk factors for neurological complications, which can occur in up to 79% of patients, will aid in the clinical management of patients with RCVS.