"experiences visionary seizures" does it mean that he has some kind of...

[Libelula46]

...premonition or is it a disease ? Thanks? Doesn't make sense. Thank you for your answers.

[PaulB]

Depends on the context. It might be an unbeliever giving a very unflattering description of someone who claims to have spiritual visions, or just possibly it might be a believer who thinks that the seizures have genuine visionary content.

Or it might be a technical term for seizures that include visual effects.

[PaulB]

Depends on the context. It might be an unbeliever giving a very unflattering description of someone who claims to have spiritual visions, or just possibly it might be a believer who thinks that the seizures have genuine visionary content.

Or it might be a technical term for seizures that include visual effects.