Blizna,
What you describe I think is similar to an ongoing complaint I have been having. I describe it as muscle fatigue. I may not be using the right language, but this is where it comes from:
I had a personal trainer for a number of years who was determined to make me really strong. He did this by having me lift very heavy weights as many times as I could until I couldn't do it even one more time. Maybe I would get in 8-10 lifts. If more, then he decided the weight was too light, and the next time I came I would be in for an unpleasant change! The last couple of lifts before I could go no further were characterized by a burning feeling in the muscle being exercised. He told me that was muscle exhaustion, and that it was important to do a few more lifts while feeling it. My arm or leg would be like jelly afterwards. Don't know why I subjected myself to that abuse (but damn I looked good!)...
Anyways, NOW I also get that exact same feeling from blow-drying my hair sometimes....but mostly I get it from holding a cell phone to my ear. My upper arm will burn, shake, and then be sort of floppy and weak feeling for a time after putting the phone down. Sometimes it is also nauseating (just like when I was lifting weights...my trainer always said, "if you ain't puking, you ain't trying")
I also describe it as "burning" but I don't know if my use of the word makes it a "sensory" symptom per se. Too me, it is a sign my muscles are being wore out from ordinary activity. My GP was very interested in this, while my neuro was completely disinterested.
Currently I DO have a diagnosed of BFS, so maybe it is all a part of that.
Lydia
(diagnosed BFS, low B12)