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I cannot recommend the location for placement of the electrodes since I cannot examine you. The doctor that is treating you with the scrambler would be the doctor to determine the location of the electrodes.
Plus, if you have to tell that doctor or clinic where to place the electrodes, then you should be seeing another doctor or clinic.
First you ask "Where do you recommend the electrodes be placed"
Then you say "I am not asking you to tell me where to tell him to place them"
You specifically asked me to do the thing that you then said you were not asking me to do.
As I said above, I cannot recommend the location for placement of the electrodes since I cannot examine you, regardless of the reason for wanting to know the location.
However, as a general rule, if neuropathic pain is affecting the entire extremity, then they probably are not going to place the electrodes in a location with no pain.
Since we do not know what causes idiopathic small fiber neuropathy, we cannot say what would cause it to progresses to large fiber neuropathy in some people.
It probably not related to the muscle, since there is no backwards communication from the muscle into the large motor fibers. It is more likely related to some factor that affects the severity of the process. For most people, the severity is such that it only affects the smaller fibers, but in the few people in which the underlying process is more severe, it may progress to also affect that larger fibers.
For other neuropathies, the severity of the underlying condition certainly increases the risk for progression. For example, in diabetic peripheral neuropathy, one of the common known causes of a small fiber neuripathy, the primary determinant of risk of progression into a large fiber neuropathy is how well (or poorly) the underlying diabetes is controlled. If we are able to get better control of the diabetes, then the likelihood of progression is lower. But in someone in whom there is poor control of the diabetes, the likelihood of progression is higher.
Once research is able to identify the underlying cause of what is currently considered idiopathic, then we can better say what factors may influence progression.
Yes, it is probably the severity of the underlying cause and whatever factors may influence the underlying cause that determines whether it progresses.
You would need to ask her to explain her rationale for the diagnoses.
I responded to the other question.
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