Hi. I am 7 weeks post op and was released from 24/7 Aspen collar yesterday. I have had incredibly horrible vertigo since removing the collar. I also have severe stabbing pains in the left side of my neck each time I bend. I am supposed to be bending and turning my head several times a day for a week until I start PT. I do have an under lying condition called Chiari Malformation which the surgeon says is why I have the vertigo. I have struggled with vertigo in the past but not like this! This is intense, constant and severe not a mild annoyance! Has anyone else had vertigo and stabbing pain after removing the aspen collar?