“The paroxysm may cease in a few moments or minutes, or continue
for some or even many hours. It generally subsides rapidly, the
patient experiencing, at its termination, fatigue, headache, or
stupor; but he is usually restored in a short time to the same
state as before the seizure, which is liable to recur in a person
once affected, but at uncertain intervals. After repeated attacks
the fit sometimes becomes periodic (the _convulsio recurrens_ of
authors.)”