Re: Neck Tension , wooshing sound
Could be your BP dropping if it's when you stand from seated/lying position and the 'whooshing' sound in ears can accompany this. There's a bundle of sensory nerves at the back of head/top of neck so weird sensations are common and can also include head/brain zaps. I felt freaked out when this first happened to me - I had the full panoply of symptoms - but I take no notice these days tbh.
If you're worried, however, you should speak to your doctor, just to be on the safe side.
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KK
Never Surrender, Comrade