Sounds like someone spiked your drink without you knowing.
It's a single variable on a very long and complex application process. Many disqualifying items stipulate "having a history of....". A one off event, to me, does not indicate you having a history of an underlying medical condition or even a behavioral issue. But it's subjective, I'm not a flt doc, and in my experience most flight docs wouldn't care.
However, there's a chance you face a bad flight doc on a bad day. What are you going to do? Not apply? Go for it.
Don't divulge. Don't lie.