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From the details provided it looks to me like he is suffering from pseudo-medically refractory epilepsy
along with psychosis
. I call it pseudo because of the inadequate dose and poor compliance with the medications. Other causes for recurrent seizures are sleep deprivation
and wrong selection of medications for the type of epilepsy.
I recommend you to see a Epileptologist for classification of epilepsy and then to choose right medicine for the type of epilepsy. Inspite of this he remains refractory with good drug compliance he needs Video-EEG for surgical evaluation.
Dr Shiva Kumar R