This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epilepsy and EEG, Subject name: Medicine
In juvenile myoclonic epilepsy (JME), which is the most common presentation? 
Select and explain. 
A. GTCS during sleep, B. GTCS on awake state, C. Myoclonus, D. Absence seizures
C: Myoclonus
Answer: C: Myoclonus 
Explanation: Juvenile myoclonic epilepsy (JANZ syndrome) - Polygenetic inheritance, Strong family history - Onset: 10 -19 yrs. - Myoclonic Jerk (early morning) and prominent in morning after awakening. Consciousness is preserved unless severe - EEG: 4-6 Hz Polyspike pattern seen. - May develop GTCS in future and in 30% will also develop absence seizure in future Rx - Valproate (lifelong)