My friends daughter is 12yo, and for the last year and a half she has been having tonic clonic seizures randomly. She is not a known epileptic, and these seizures usually start about a week before she gets her period. Sometimes they can be also brought on by exercise etc. She was a prem baby. There is a possible genetic link - a family member used to have seizures around that same age, although she does not have them now (shes now adult). The family are struggling to find answers despite previous tests.