Thanks for writing in to Healthcare Magic!
Your husband has slightly raised blood pressure and it is not a likely cause for his symptoms but he seems quite sick.
Possible causes can be a severe infection, Benign paroxysmal positional vertigo
, infection of inner ear-labyrinthitis
He should get examined by a physician and should get a detailed investigations if needed as soon as possible.
If you have any further query please let me know I would try to answer it for you.
Wish you a great health!