I start with an ache in the muscles. Not a bad ache...more of an "I can't get comfortable" ache...followed by an "if this ache doesn't stop soon I'm going to cry" kind of ache.

Then it morphs into numbness with the ache. Everything hurts but if I touch my skin, it feels like I have had a shot of novacaine.

Then it morphs into numbness bad enough to affect my walking. If you can't feel the ground with your foot, you a hard time walking without looking at your feet.

This causes me to trip and fall. This is when I get the IVSM.