I would say that yelling out in a seizure would be a form of a complex seizure.
But not positive, this just means that its something that the person wont
remember anything about. Its one of the kind of seizures my son has.

And there are simple seizures that they remember what happens most of the
time. My son has both of these, and the gran mals, and drops and other kinds.

But there is no way to know if they are in pain. Other than if they fall and
hit there head or something like that.
Donna