Efficacy and safety of 121 injections of the greater occipital nerve in episodic and chronic cluster headache.

Introduction: Infiltration of the greater occipital nerve (GON) with local anaesthetics and corticosteroids is a treatment option for cluster headache.

Methods: We retrospectively analysed the efficacy and safety of 121 GON injections in 60 patients with episodic or chronic cluster headache over a period of 4 years.

Results: Almost 80% of the infiltrations were at least partially effective (reduction of attack frequency, duration or severity) and 45% resulted in a complete response (no further attacks).