This article is from the Epilepsy FAQ, by Andrew Patrick (email@example.com) with numerous contributions by others.
In some cases, epileptic seizures can be triggered by things that
happen in the environment. Seizures can be triggered by flashing lights
or sudden changes from dark to light (or vice versa). Other people can
react to loud noises or monotonous sounds, or even certain musical
notes. It is important for people with Epilepsy to learn what kinds of
events can trigger seizures for them.