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10-16-2023, 09:55 AM | #8 | ||
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Magnate
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If you showed up with a positive EMG--meaning one that wasn't "normal"--you don't just have small fiber involvement; you have large fiber involvement as well.
EMG and nerve conduction studies cannot ascertain the functioning of the smaller, unmyelinated fibers that subsume the sensations of pain and temperature (and many autonomic functions); it would take sudomotor axon reflex testing, qualitative sensory testing, or most commonly, skin biopsy for that. But EMG/NCV can reveal problems with larger, myelinated nerves that subsume the sensations of mechanical touch, vibration, and positioning, as well as motor functions. Still, post-viral and bacterial infections leading to neuropathy are not uncommon, though often underdiagnosed. The good news is that often in such acute onset post-infectious neuropathies in which autoimmune molecular mimicry is suspected there can be slow, partial recovery (though it is often VERY slow and VERY patchy). See: Acute neuromuscular disorders |
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