**Abstract**

Blister aneurysms are rare carotid lesions characterized by a thornlike appearance in combination with prominent fragility. Comprising less than 2% of all intracranial aneurysms, they are considered to be either dissecting or false aneurysms. Etiogenesis remains poorly understood, though atherosclerosis seems to be playing a prominent role. Although many approaches have been tried throughout the years, treatment of blister lesions remains debatable. Both surgical and endovascular modalities can be used, with every technique having though its own limitations and pitfalls. In this context, when confronted with such a lesion, physicians should consider all available alternatives in order to maximize the chances of a good outcome.

**Keywords:** blister aneurysms, blister-like aneurysms, carotid aneurysms
