Trials of the device, which causes a mild tingling sensation, have shown it can cause a 50 per cent improvement in the symptoms of people suffering from depression.
It has also been found to reduce the occurrence of epileptic seizures in patients who did not respond to drug treatments.
The researchers who developed the device, known as an external trigeminal nerve stimulation patch, presented their results to a conference on medical innovation at the Royal Society of Medicine in London yesterday.
via telegraph.co.uk