raideryparkeryranger,I get this all the time too except, I get it in my legs arms and back/shoulder area. The best way I can describe the vibration is it is almost like tremors. The same type of tremor/shaky feeling you would get if you were coming down with the flu and have a fever. My tremor/buzzing/shaky feeling is more constant though. It feels like it is always there and it affects the way I walk, somewhat like a Frankenstein type walk. It almost feels like a lowgrade electrical current running through the inside of my body. I guess it could be like a purring cat as some describe. I have heard of "restless leg syndrome" but never restless leg arms back and shoulder syndrome. Maybe I can get this conditioned named after me some day lol. Also, the twitching I get in my calves also extend down below the calf muscle itself between the calf muscle and achilles tendon and creates this pulling sensation on the nerves. Does anyone else ever get this type of sensation?