Sir/Mam, My symptoms are 1. While sleeping I feel like the bed is shaking (just like how berth shakes in trains) or if I am sitting on Sofa/chair I feel like the same. I get this shaking feel from back part of my head.  2. Also I feel vibrations is going on inside my body especially in the head and legs (mostly legs). The feeling increases while sleeping & sitting, while not so frequent while standing. 3. Occassionally I feel light headedness and tendency to fall down. I am feeling these symptoms for past one month now, I am not sure what am I experiencing. Also I have noticed feeling increases in evening & night. Can someone please help me, I am really stressed about this?