Hi and welcome! Phil, Clark, Morgan, karilann, godiva3ft and Tresa.

I have this too. It was part of Vertigo for me, also moving the head back and forth too fast in a store, looking around, I thought the floor was sinking. I had to hold on. The neck is involved, eyes too and ears.

FWIW:
They also say that when the jugulars have blockages, you should sleep elevated to allow some gravity to let the blood flow back down from the brain. The blood gets trapped in the head, causing pressure and perhaps iron build-up, they say.

Elevation has many benefits. Even for acid reflux. Keeps the acid down.

Keep your bed elevated at head level with those cups for the wheels, or put rubber under the head part of your mattress, or get a wedge to sleep on. Put it on top of your mattress and add a pillow if you like.

Back straight, head higher than the heart, and firm support.
JMO, and thoughts on this, which I have read about.