Seizures can be due to a variety of acute, subacute, or chronic diseases with different etiologies. Clinically, they may manifest as focal or generalized phenomena. Whereas the majority of the patients suffering from partial seizures are easily controlled with medications, in a small number of patients treatment may fail. The failure may be due to incorrect diagnosis or incorrect therapy. The efficacy of medical treatment for seizure disorder depends upon six factors: 1) dosage; 2) the size of the patient; 3) drug interaction; 4) drug specificity for the disease; 5) the nature of the disease for which the drug is used; 6) the mode and frequency of medication