Progression of bilateral internal carotid artery dissection during antiplatelet therapy.

Bilateral internal carotid artery dissection (ICAD) is a rare but important cause of stroke in young adults. Anticoagulant and/or antiplatelet agents are usually recommended for stroke prevention;however, such treatments remain highly controversial, and there are inadequate data to compare the efficacy of anticoagulation and antiplatelet therapy. We herein report the case of 30-year-old man presenting with progressive bilateral ICAD during antiplatelet treatment. This report suggests the possibility that intramural hematomas are enlarged by antiplatelet and anticoagulant agents and draws attention to the medications associated with ICAD.