Thanks for the link, Joel. I find this diagram to also be extremely helpful in dealing with different types of epilepsy.

When an Electroencephalogram (EEG) is carried out, a flashing light test, called photic stimulation, will often identify if you are photosensitive. The light test is stopped if it looks like you might have a seizure. EEG test results, every single time, indicated flashing lights did not trigger my seizures. Please ignore people such as the guest above. This is a chance for us to have a positive discussion.