Hi Joe,
Sorry to hear you are having problems. To tell you the truth, i have the buzzing, twitching thing too (feels like a cellphone on vibrate implanted in my left leg), but i also get exercise fatigue and cramps. the twitching seems to be all over...right now my hands are kinda clumsy...and i noticed trouble going down steps but, not up.
had an MRI that showed abnormal white matter, but the neuros dismissed it and told me i had a conversion disorder(nut case)...i got a second opinion and had a NcV/EMG done and told the new neuro about the buzzing...they told me i have muscle atrophy in the left leg and polyneuropathy and that the buzzing was small fascicillations.
i'm scared about the atrophy...how old are you?
do you have a physical job or play sports or any trauma (car accident, ect.) recently?