The duration of a single seizure in secondary epilepsy is uncertain, there are no statistics on it, and there are relatively large individual variations.
Secondary epilepsy, also known as symptomatic epilepsy, is epilepsy caused by other disorders and can be seen at any age, mostly starting after young adulthood. It can be categorized as temporal lobe epilepsy, frontal lobe epilepsy, parietal lobe epilepsy, occipital lobe epilepsy, chronic progressive partially persistent status epilepticus in children, epilepsy syndromes with a specific mode of facilitation, and cryptogenic epilepsy.
The frequency of seizures in secondary epilepsy may be several times a day, once a week, several times a month, or even once a year or once in several years. It is generally accepted that the frequency of seizures is not directly related to primary or secondary. It is also possible for secondary epilepsy to be seizure-free for long periods of time.
In addition, secondary epilepsy can be relatively dangerous and it is recommended that patients need to be actively treated.