CIDP aand Lower Back Pain
In my experience, the first symptoms of what would eventually be diagnosed as CIDP began with lower back pain. I thought that I had ruptured a disk or some other strain, but the EMG and lumbar puncture concluded CIDP. Apparently, the demylination of the nerve that extends from my spinal cord through the lumbar vertebrae became so inflammed that it pressed up against the vertebrae, thereby causing the constant pain. This nerve extends down the buttock into the leg, so the pain gradually radiated down this path. Thankfully, this pain was substantially extiguished within 1-2 days of IVIG.
I hope this helps.