Could be your meds or taste buds changing. Everything is tasting bitter to me lately but I am chalking it up to surgery

It might be an Aura before a seizure is going to happen. It might be pills, since all the food I eat tastes bitter. He could be a minor type of a seizure. I would say ask your neurologist / specialist doctor they the one's that know about these and studied I think it's quite alot of years to know all of these things

It happens when a panic attack is about to happen

Not me at all.

Yes a little