Been having frequent episodes of vertigo/dizziness for months with blurred vision, tingling in my lips. nausea/headache follow at times. possible cause?

Difficult to say: Vertigo is a sensation of spinning or motion of the person or the environment, while dizziness is not a sense of motion but lightheadedness or feeling floaty or off kilter. There can be neurologic issues, inner ear problems , visual problems, psychologic issues, cardiovascular problems, and many other issues. You need a thorough medical evaluation.