rhythmic vibration, in my foot has been occurring for nearly 1 month... happens every 4-6 secs... no tingling... feels like a tens unit vibrating deep inside my left foot but isn't muscle related, producing no twitching... my left calf was sore but is fine now... my second toes on both feet swelled, which they never have done before... my right foot is finally healing from a broken toe from 5 months ago... have osteopenia...poor circulation? neuropathy? blood clot? can't see my dr. for 3 more weeks! seems like something is really wrong...