Which treatment method is NOT commonly used for epileptic conditions?

Cognitive behavioral therapy (CBT) is not commonly used as a primary treatment method for epileptic conditions. While CBT can play a supportive role in managing the psychological aspects of living with epilepsy, such as addressing anxiety or depression that may arise due to the condition, it does not directly address the neurological aspects of epilepsy itself.

In contrast, the other treatment methods listed, such as surgical intervention, medication therapy, and vagal nerve stimulation, are established methods for directly controlling seizures and managing the condition. Surgical intervention may be employed for patients who do not respond to medications and have localized epilepsy. Medication therapy is typically the first line of treatment and includes a variety of antiepileptic drugs designed to prevent seizures. Vagal nerve stimulation involves implanting a device that sends regular, mild pulses of electricity to the brain via the vagus nerve, and it can also help reduce the frequency of seizures.

Thus, when considering treatment methods explicitly aimed at managing epileptic conditions, cognitive behavioral therapy does not fit into the category of standard treatments.