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NERVE
BLOCKS Disclaimer.Introduction In nerve blocks, a local anesthetic is injected near the nerve, either at the root or at a peripheral site. A single nerve block will usually only give short-term relief lasting for as long as the anesthetic is effective. Sometimes, nerve blocks can help stop a sudden, severe TN attack. In addition, there is some evidence that when injections are repeated several times over weeks or months, the pain may be relieved for much longer times. There are several possible types of nerve blocks. In a trigger point injection, the anesthetic is injected very near a trigger point, that is a point which when touched causes a pain spasm. Such points around the face are typical in TN. The injection may also include cortisone. In a stellate ganglion block, the anesthetic is injected near the ganglion (root) of the nerve. The injection site is on the neck. This type of nerve block results in the blockade of the sympathetic nerves of the face and does not directly anesthetize the trigeminal nerve. Thus, it appears to be most successful in treating various types of atypical facial pain. Nerve blocks do not generally give permanent relief. Even in the best of cases, painlessness rarely lasts more than a year or two. However, since nerve blocks do not scar or otherwise damage the nerve, they can be repeated as necessary. The TNA book, "Striking Back" reports on a study in the 1980's where 16 out of 20 TN patients got pain relief for more than two years after a series of lidocaine and streptomycin sulfate injections. It also reports that a Nebraska dentist, Dr. Gerald D. Murphy, who specializes in orofacial pain has been successful in reducing pain with Marcaine injections in pain trigger points. Others have failed to replicate these studies in a small double-blind study with no success and noted that some patients suffered side-effects such as facial swelling.
Positive Experiences
Mixed experiences
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