Despite the significant improvement in the materials and the techniques used during carotid artery stenting (CAS) as well as the increased operator experience during the last years, complications still occur. Up to now, neither a classification nor a common definition of the possible complications still exist. It would be crucial as a common platform for prompt recognition, evaluation, treatment and study of the complications during CAS procedures and to reduce the clinical sequelae. The aim of this article is to review the most frequent periprocedural complications, to analyze their incidence and etiology, and to suggest possible ways of management and prevention.