Los movimientos de balanceo cesan al conducir en coche

Please if anyone knows anything about this or has these symptoms please respond. For the past 3 years I have had a rocking motion where my body rocks back and forth 24/7 unless i am riding in car or lying down in bed then it stops. I have been to every doctor imaginable and they can’t find anything incl neurologists, neurosurgeons, etc. I have had all the tests available and they can’t find anything wrong. I am so tired of this and it’s getting worse as every week goes by. I have been tried for motion sickness and it’s not that. I am also getting a pain up the middle of my neck which runs to my left side of head. Please help

this is for my husband who is 68 years old not it is not my symptoms