Charlin’s syndrome is a rare neuralgia of the nasociliary nerve, typically arising from nasal pathology. Post-traumatic cases, particularly following orbital blowout fractures, have not been previously reported.

A 33-year-old male presented with severe, persistent oculo-orbital pain and epiphora three weeks after sustaining a left orbital blowout fracture. Conservative management failed, necessitating surgical decompression via a transcaruncular approach. Preoperative CT revealed a medial orbital wall fracture. The ethmoid bone was resected to decompress the ethmoidal nerves, and the defect was reconstructed using a titanium mesh. The patient experienced complete pain relief and resolution of symptoms within two weeks, maintained at one-year follow-up.

Post-traumatic Charlin’s syndrome is extremely rare and should be considered in cases of refractory facial neuralgia following orbital trauma. Targeted surgical decompression of the affected nerve can achieve complete symptom resolution when conservative therapy is ineffective.