If it's serious to the point you don't know if you can keep the car going straight, how can you guarantee you can stop or react in other ways in an emergency? I don't see how this is OK, you shouldn't be driving.
> There are different regulations about driving with certain health conditions based on where you live. For example, South Carolina and Utah, USA do not have any stipulations about driving with a vestibular condition. However, US federal law requires that you stop driving until any vertigo attacks are controlled and well regulated.
https://vestibular.org/blog/should-you-drive-with-a-vestibul...