RT Journal Article SR Electronic T1 Cerebral vasospasm and anterior circulation stroke secondary to an exacerbation of hereditary corproporphyria JF Practical Neurology JO Pract Neurol FD BMJ Publishing Group Ltd SP 384 OP 387 DO 10.1136/practneurol-2012-000288 VO 12 IS 6 A1 Mullin, Stephen A1 Platts, Andrew A1 Randhawa, Kashmir A1 Watts, Paul YR 2012 UL http://pn.bmj.com/content/12/6/384.abstract AB Acute porphyria, though rare, has well-known neurological sequelae. Vasospasm rarely complicates exacerbations of acute intermittent porphyria, but has not been previously reported in hereditary coproporphyria. We describe a porphyric crisis in a woman with previously undiagnosed hereditary coproporphyria (triggered by rifampicin), leading to vasospasm and stroke.