What would make me feel hot and sweaty like my head is spinning and everything to go black? If I hold on to something I can stay on my feet if I sot down it helps even better it never happens when I m sitting and the winter isnt as frequent as the summer. I eat like im supposed and drink lots of water.
U seems to have vertigo most likely BPPV. Try tab betahistine. In your case vestibular exercises and maneuvers like Repays, Simmonds may help. Consult ENT specialist to rule out other causes.