Dear John
There seems to be a great deal of confusion about sciatic nerve pain versus somatic referred pain.
Sciatica by definition (definiton of pain 1994) states that sciatica is a pain that travels down the back of the leg (down the crease of your trousers), in the following manner. It is described as: lightening bolts, electric shocks, extreme pain that one has never felt before. This is sciatica. It is extremely rare to say the least. The only cause of scaiatica is compression of the cells in the dorsal horn of the spinal cord which is found in the lateral recess. The commonest cause is discal lateral protrusion. Almost 100% of pain is caused by this method.
Any other pain is referred somatic pain. There are over 240 structures that can cause pain down the leg (Renee Calliet).
As nerves do not have nerves of their own, they cannot tell you where the injury is.
Neuropathy and neuritis are TRUE damage to the nerve itself. Thus their specific way of complaining, ie pain.
If you compress a normal nerve you only get: paraesthesia (pins and needles) and numbness, NEVER pain.
Thus there are many markers that can tell you what is happening where and when.
You do not need to use imaging when the history is clear. Thus history is everything.
Hope this helps.
musmed
www.musmed.com.au
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Originally Posted by John Spina
I would guess that they nondiabetic causes of neuropathy give the same set of symptoms.There are differences,for insance sciatid nerve pain would cause pain that is relieved by bending-"shopping cart sign"
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