My son is 6 months old. He began having seizures
Seems a case of benign childhood seizures.
Hello and welcome to " Ask a Doctor" service.
I have read your query and here is my advice.
It is normal to be concerned especially when you are first time parents, however, those seizure types (partial complex seizures) are not caused by an important brain lesion such hemorrhage, vascular malformation, tumor, etc. and this was confirmed by the tests that came back negative for these conditions.
So, this fact should comfort you, and these types of seizures in most of the cases, improve with age.
So, keep following up with the Doctor. If there is no sufficient control of seizures with the current medication, new possibilities (valproate for example) may be considered.
Hope you found the answer helpful.
Let me know if I can assist you further.