I have had constant vertigo for over 2 years. It started suddenly and has not ever really gone away. No BPPV, no tumors. One specialist said cervical vertigo another said possible vein compression of the vestibular nerve. I have been to 10 doctors in the Chicago area. My live is in ruins. Like you it lasts all day and I also have given up driving. Tried the exercises and they did not help. Also like you the doctors keep suggesting various medications but I am very sensitive to the side effects of the medications. At this point I am not sure what to do. Let me know how you are