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Injection sites for greater occipital nerve (GON) block.

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Presentation on theme: "Injection sites for greater occipital nerve (GON) block."— Presentation transcript:

1 Injection sites for greater occipital nerve (GON) block.
Injection sites for greater occipital nerve (GON) block. The injection sites (A and B; one to each GON) are identified as being at the proximal third of the distance between a hypothetical line from the occipital protruberance to the mastoid process. GON block side effects include a local alopecia, transient dizziness and worsening of the headache. The block can be repeated about every 3 months. Alex J Sinclair et al. Pract Neurol 2015;15: ©2015 by BMJ Publishing Group Ltd

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