Too Many Possibilities To Blame Just One
Ron,
I have done a lot of welding during my life and I know that seeing the light that is emitted during welding is one of the brightest that you will ever see.
One big possibility for your seizures could be that the location in your brain that is causing your seizures is located so deep within your brain that nothing had ever reached that deeply into your brain to trigger a seizure before.
Like so many people have said, a human body is constantly undergoing changes. This could have very well happened because your body and brain had changed just enough to be set off by the strobe lights like someone else said.
I was diagnosed in 1966 and the knowledge they had about E was so small compared to today. There are many more cases found today because of the growing amount of knowledge about the brain and it's functions. This knowledge still needs to grow by a huge amount before anyone can be satisfied.
You say that drinking 'expresso' helps bring you out of your foggy time after a seizure. Caffeine has been proven to be something to stay away from just like alcohol for a person w/E.
The amount of time that you have had grand mal seizures is not long enough to say that this is the way it is going to be forever. With the changes that can occur w/E you have to be ready for almost any kind of change whether it is positive or negative.
There have been people who suddenly start having seizures and continue for a while only to stop having seizures just as suddenly as they began.
You have to realize that what the neurologist did was something that they have probably done many times before so you can't hold them responsible. If you were to make the doctors who work with people w/E stop using the strobe lights, doing this could very well prevent those doctors from diagnosing many other people. Because of this it has to be taken into the determination that stopping the strobe test could definitely cause a lot more problems than using the strobe can.
Many times it takes a person a considerable time to look at every aspect of their situation and get a complete understanding of what has or is happening. Doing this can be very helpful in calming a person down over something that has happened to them instead of jumping to a conclusion too quickly w/o having all of the facts.

onder:
acshuman