Triptan-induced Reversible Cerebral Vasoconstriction Syndrome Presenting With Thunderclap Headache and Paraparesis.

Reversible cerebral vasoconstriction syndrome is a rare clinical syndrome characterized by sudden thunderclap headache often an under diagnosed neurological emergency. It is often provoked by postpartum state or exposure to provocative drugs. We report a rare case of Rizatriptan-induced reversible cerebral vasoconstriction syndrome presenting with thunderclap headache and paraparesis with complete recovery of neurological and imaging findings.