Thank you for your query on Healthcare Magic.
Your child seems having a myoclonic seizures
mostly due to an underlying neurodegenative or neuro metabolic problem due to which he is having myoclonic seizures, hearing problem, and decreased perception of sensations.
What is the diagnosis in child?
Diagnosis is important in this type of problems to say the response of treatment in any specialty.
Continue the medication as advised and consult the pediatric neurologist
for complete work up.
Hope I have answered your query.