Is weakness ever a feature of SFN? I was dxed with SFN a few years ago (no biopsy) but have few or no symptoms unless I go above a tiny dose of COPD meds. I increased dose of inhalers 2 days ago and today I could barely finish grocery shopping because my legs were so weak. I also had numbness, tingling and aching pain with some burning in my feet after evening med dose.
At the time I was dxed I had a nerve conduction test that showed no evidence of damage beyond some carpal tunnel which also does not bother me unless I take meds.

Thanks for any comments.