I have heard many times that a strobe light can cause some people to have seizures. I fact there used to be a flashing light on some traffic lights which caused many accidents because people had seizures from it. In fact when I activate the LED light on my phone as a strobe light it kind of gives me a headache. I am not knocking these types of lights because the can add cool effects to things. Just be careful when you are around them because you never know what it might do to you.