Why do i feel like my brain is moving when i stand? it's different from what i do experience on anemia attacks. my vision's not spinning but it's just the inside of my head. nape hurts too. it's been 5 days. hoping for help, thank you?

This type of vertigo can be from an inner ear disturbance,labyrinthitis,or vestibular neuronitis if you note that head motions or changing positions such as turning over in bed aggravate the vertigo. A dislodged crystal in the inner ear usually causes pronounced vertigo. Absence of other symptoms makes brain causes less likely. Consult an otolarngologist or neurologist for evaluation & advice.