Vascular Occlusion After Dermal Filler Injection: Early Recognition, Prevention, and Management — An Updated Narrative Review

Background: Dermal fillers are widely used in aesthetic medicine for facial rejuvenation, contour restoration, and soft-tissue augmentation. Although generally safe when properly administered, vascular occlusion is one of the most severe filler-related complications because delayed recognition may result in tissue necrosis, scarring, or vision-threatening events. Methods: A narrative literature review was conducted using PubMed and supplementary manual searches, focusing primarily on articles published between January 2018 and April 2026. Search terms included “dermal fillers,” “hyaluronic acid fillers,” “vascular occlusion,” “filler-induced ischemia,” “hyaluronidase,” “ultrasound,” “vision loss,” and “filler complications.” Relevant systematic reviews, clinical guidelines, consensus statements, ophthalmology reports, original studies, and clinically relevant case reports were included. Results: Filler-induced vascular occlusion may occur through inadvertent intravascular injection, retrograde embolization, anterograde propagation, or extrinsic vascular compression. High-risk regions include the glabella, nasal dorsum, nasolabial fold, periorbital region, forehead, temple, and lips. Early findings include sudden blanching, livedo reticularis, delayed capillary refill, severe disproportionate pain, and progressive discoloration. Management should begin immediately based on clinical suspicion and includes cessation of injection, high-dose pulsed hyaluronidase for hyaluronic acid fillers, supportive measures, close monitoring, and urgent ophthalmologic evaluation when visual symptoms occur. High-frequency ultrasound may improve diagnostic precision and guide targeted hyaluronidase administration when available. Conclusions: Dermal filler-induced vascular occlusion is an uncommon but potentially devastating complication requiring rapid recognition and immediate treatment. Prevention depends on anatomical knowledge, careful technique, appropriate product selection, and procedural preparedness. A structured management approach may help reduce treatment delays, standardize care, and improve clinical outcomes.