Abstract
Juvenile myoclonic epilepsy of Janz (JME) is one of the primary generalized epilepsy characterized by myocloic seizures and awakening grand mal. In this time we presented 14 cases of JME which we have examined. There are 5 male and 9 female. The mean age at onset of epilepsy was 11 years and 2 months, ranging from 4 years to 14 years and 3 months. The age at onset of myoclonic seizures was ranging from 9 years and 16 years and 4 months, with the mean age of 12 years and 7 months. Period of following up were from 0 year and 7 months to 13 years and 10 months, average period of which were 6 years and 2 months. The different seizures types were observed on 12 cases, which were 8 cases of GTCS and 4 cases of GTCS combined with absence seizures. Positive family history for epilepsy or febrile convulsion was found in 6 cases of patients.
EEG showed the diffuse 3-5 Hz polyspike and waves in all patients and photosensitivity in 8 cases and activation by HV in 10 cases. Their intellectual prognosis were excellent but seizure prognosis was difficult to reffer because of insufficient treatment due to uncorrect diagnosis of parial seizure evolving to GTCS instead of JME in 4 cases. Uncorrected diagnosis of JME might be made from lack of awareness about these characteristic features or poor history taking on the preceding seizures of GTCS. We must pay attention upon the GTCS around the puberty not to miss the subtle preceding phenomenon.
