Mike,

I am sorry to hear about this unexpected health problem. Ten
years ago, out of the blue, I had episodes of unexplained dizziness
and very short (few seconds) loss of consciousness. I went through a
barrage of tests and the neurologist could not find anything wrong.
The symptoms lasted only few months. When I got interested in
flying, my medical certificate application was turned down even though
I was completely symptoms free for over three years. After appealing
three times over the course of almost a year, and went through several
rounds of testing (the last round were some specific tests recommended
by a very helpful doctor from Oklahoma), the FAA finally relented and
granted me my medical. I have been flying intensively over the last 6
years (hit 700 hours mark last week).

Like you, while waiting for my medical certificate, I kept flying
with an instructor. I probably hold the record of most amount of
dual time before getting my pp certificate! So keep flying and good
luck.

Hai Longworth