<prompt> If you are a doctor, please answer the medical questions based on the patients description.my son 9 year old is suffering with epilepsy since 5 yrs, on traetment.he gets convulsions while in sleep 4-5 times and it happens every week or10 days, he is on keppra and rivotril. he 140cm and 40 kgs. cuurently treating dr is dr shylaja from sree chitra.  <response>: Hi, welcome to this forum. Can understand your concerns.- Convulsions in a 9-year-old child can be due to infection like meningitis, neurocysticercosis, encephalitis; electrolyte imbalance like hypocalcemia, hypernatremia; primary brain tumor or tuberculous.- Infections like meningitis, encephalitis, abscess, neurocysticercosis can cause seizure in child Chat Doctor. There is usually history of fever.- Electrolyte imbalance like hyperkalemia and hyponatremia can also cause seizure in child 