Facial nerve palsy after middle meningeal artery embolization for chronic subdural hematoma: illustrative case.

Special attention must be given to the endovascular technique implicated and to the complex anatomy of the middle meningeal artery (MMA) to reduce the incidence of such complications. Management of such complications is extrapolated from the available literature on facial nerve injuries and is mainly supportive through eye moisturization, facial muscle rehabilitation, and steroids. Although no consensus has been reached for prevention, some recommendations have been given throughout the literature, such as distal microcatheter positioning, proximal mechanical blockage with balloon-assisted flow reversal, and the use of coil-only embolization or high-viscosity embolic agents with a particle size ≥ 150 μm. https://thejns.org/doi/10.3171/CASE25866.