and irritated area, either muscle or nerve

http://www.fpnotebook.com/RHE34.htm

This is one insurance company's viewpoint on the subject:
http://medpolicy.bluecrossca.com/pol...njections.html

Having had 'knots' and 'trigger points' both due to muscular injuries in a past life...there is a world of difference between the total nerve involvement and those knots! With carpal it 'ends' somewhere clearly.
Knots for example can be felt when one has carpal tunnel. Whole nerve irritation is just that...goes from head to toe almost ending w/the most pain either in the head, toe, or at the spinal connectors... At least, that's my take on it. - j