<unk>  <unk> , also known as Janz syndrome, is a fairly common form of generalized epilepsy of presumed genetic origin (previously known an idiopathic generalized epilepsy), and is also known as “Castels and Mendilaharsu Syndrome” in South America, representing 5-10% of all epilepsy cases.<unk>  is a permanent syndrome, start of which is during adolescence and is the most common of genetic generalized epilepsy syndromes. However, now the idiopathic generalized epilepsy version is no longer accepted and it is considered to be a system disorder wherein the ictogenesis is in distributed bilateral neural networks that primarily involve selective areas of the neocortex and thalamus. This disorder typically first manifests itself between the ages of 12 and 18 with sudden brief involuntary single or multiple episodes of muscle(s) contractions caused by an abnormal excessive or synchronous neuronal activity in the brain. The typical onset age for<unk>  is between 12 and 18 years, but the symptoms can begin anywhere from 6 years to 36 years. These events typically occur either early in the morning or upon sleep deprivation.<unk>  reported as inherited idiopathic epilepsy syndrome (generalized). The impairment in frontal lobe executive function has been find out in the patient with<unk> . The findings of neurobehavioral assessment showed the impairment in working memory along with executive functions. The patients with<unk>  displayed the abnormality in motor cortex activations. Additional clinical presentations include seizures with either a motor (tonic-clonic seizure) or nonmotor (absence seizure) generalized onset. The evidence of absence seizure is very rare in the patient with<unk> . Genetic studies have demonstrated several loci for<unk>  and identified mutations in 4 genes.
Juvenile myoclonic epilepsy
Progressive myoclonus epilepsy
Benign infantile epilepsy
Childhood absence epilepsy
Benign familial infantile epilepsy
Musicogenic epilepsy
Northern epilepsy syndrome
Vertiginous epilepsy