<human>: Can you summarize the given text in a few sentences?

I was working at a mall the other day and a Santa picture area had just been set up almost directly in front of our store. I didn't pay much attention to it until the picture started being taken. Each time the camera's flash went off it would light up an entire window in our store suddenly and I felt severely anxious and light headed for a couple seconds. Everyone else was fine. But each time the flash happened and I saw it out of the corner of my eye, I would get the same anxious reaction. I felt like I needed to run away or cry. I have never had this reaction to anything before. I do have anxiety problems, but they are very different than this. I have been to multiple concerts with strobe lights and have been fine, so I don't think it was anything related to epilepsy.
<bot>: A really bright camera flash going off randomly from a distance made me severely anxious and light headed. No history of epilepsy. Any ideas?