Abstract
The third occipital nerve arises from superior branch fibers of the third cervical nerve at the level of the trapezius muscle. Third occipital nerve block is useful in the diagnosis and treatment of third occipital nerve headache. This technique can also be used in a prognostic manner to assess the potential efficacy of destruction of the third occipital nerve with radiofrequency lesioning or other means. Radiofrequency lesioning of the third occipital nerve block is useful in the treatment of third occipital nerve headache in patients who have shown a response to block of the third occipital nerve with local anesthetic but have failed to obtain long-lasting relief.
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