Merck Manual says this about Plexus Disorders

I just found this in Merck Manual On-line

http://www.merck.com/mmpe/print/sec16/ch223/ch223i.html

“Disorders of the brachial or lumbosacral plexus cause a painful mixed sensorimotor disorder of the corresponding limb.

Because several nerve roots intertwine within the plexus, the symptom pattern does not fit the distribution of individual roots or nerves. Disorders of the rostral brachial plexus affect the shoulders, those of the caudal brachial plexus affect the hands, and those of the lumbosacral plexus affect the legs.”

They talk about acute brachial neuritis and say:

"The most commonly affected muscles are the serratus anterior (causing winging of the scapula), other muscles innervated by the upper trunk, and muscles innervated by the anterior interosseus nerve (in the forearm—patients may not be able to make an “ο” with the thumb and index finger)."

If any one of my earlier doctors had come across this, it may have saved me a few needles trips to out of town doctors, and therefore saved my insurance carriers some money.

All of my answers were here on one site, and I just had not found it. And, if a doctor along the way had bothered to check their Merck Manual for "Brachial Plexus Neuritis", they would have been refered to this page on plexus disorders.