I had 3 done- lip, foot and upper leg. upper leg now numb. n6 to 8 inches around site. foot dead around site. do pain. BUT the lip bio, they go deep. aIt broke open 3rd day and they told that it would not pay to sew it up.
So now I have a big scar on inside of lip and at times it hurts like hell

I also had 2 operations for my sleep apnea---UPPP- most painful.
upper and lower jaws broken ans extended10cm out I breath a weeeeeebit betteer but my face hurts as much as my feet. Which caused me to try all the drusg on the market. I always stay with methdone 60 to 120 mg per day and 40 mg 0f hydrocodo and what ever is hot6 at the time But you got to try
good Luck hm

--sound very unusual--first time I've ver heard of that much spreading numbness--was it a SKIN biopsy?

Skin biopsies for small-fiber neuropathies involve very shallow samples--generally only about 1mm deep and 3mm in diameter (smaller than a pencil eraser). The biopsy sites are small enough to be covered by a little round band-aid.

I wonder too if it was a skin biopsy which is not invasive. However, a nerve biopsy is and it can leave numb spots as it is invasive. They usually do not do them anymore. At least they are not recommended for a person with CMT. A skin biopsy is the way to go for us.