reykjavik wrote:

Also, is this "illness" (or whatever its called) serious in any way?

*If* it's vertigo, it can be symptomatic of certain serious illnesses (such as
cancer). Vertigo can also be caused by a sudden movement of the head, such as
might happen if your car were struck from behind. It can also be a reaction to
long-term overindulgence in caffeine.

George Patterson
Coffee is only a way of stealing time that should by rights belong to
your slightly older self.