Is the effect VNS has on the voice permanent?

Do you need screening for sleep Apnea before VNS is implanted?

If the ketogenic diet works for a patient of Ring 20 is it a cure or can relapses happen?

Are any other Non Pharmacological therapies for Ring 20?

Are nightmares that happen at the start of epilepsy in r(20) ‘seizures’?

What triggers the first seizure?