When I sit down, I get the strange feeling that my back is moving, this gets worse when I sit on a hard chair or lean forward. I also find when I get up out of a chair after sitting for a while that I feel compressed when I walk, as though I am almost snapped in half, or having someone press down ******n me. This walking feeling gradually gets better after a few minutes, but never goes fully. It is worse when getting out of car seats or from lying down, although does happen in all seats.
I have also been suffering with odd aches and pains in my arms, and a stiff neck (I also wake up every night with pins and needles in my hands/arms). The most annoying thing though is the involuntary back movements, as mentioned above, they just happen on their own, as though I am being shoved about inside. I can't figure where on my back it is coming from, it feels like the whole of it. I even feel it when I lie down and stand up. It is a sort of rotating feeling. I can't work out if it is muscles or nerves or something else.
Can back or neck problems cause such an odd sensation ? Why is it worse when I lean forwards ? Why do I feel so compressed when I walk after standing up from a chair ? I am not sure what sort of tests I should have done, although I am for sure having a neck MRI soon.
Thanks for any help or advice.