Acute Neuralgia After Sclerotherapy Near the Brachial Plexus: Stellate Ganglion Block as an Effective Rescue Strategy-A Case Report.

This case report describes a 49-year-old man who developed severe, atypical chest and shoulder pain mimicking myocardial ischemia after sclerotherapy for a hemangioma near the brachial plexus. Initial systemic analgesics were ineffective, and hemodynamic instability ensued. Suspecting acute neuralgia from sclerosant extravasation, an ultrasound-guided stellate ganglion block (SGB) was administered, resulting in rapid and sustained pain relief and stabilization. This case highlights a rare but significant complication of sclerotherapy and underscores the value of early interventional pain management. To our knowledge, this is the first report of SGB being used to treat acute neuralgia in this context.