Recurrent extracranial internal carotid artery vasospasm associated with recreational marijuana use

- Patient presented with recurrent transient episodes of neurological symptoms including weakness and speech difficulty
- Imaging studies revealed recurrent transient vasospasm of bilateral extracranial internal carotid arteries
- Pt carried a remote diagnosis of traumatic left ICA dissection but no dissection flap or pseudo-aneurysm was ever identified
- Patient reported regular recreational marijuana use
- Link between marijuana use and extracranial internal carotid artery vasospasm is proposed