The invention relates to a device for modulating one or more nerves within a body of a patient comprising:- a handheld device (300) comprising a enclosure with an interior and an interface configured for contact with an outer skin surface of a patient；- a source of energy (320) housed within the interior of the enclosure, wherein the source of energy is configured to generate an electrical field comprising bursts of pulses with a frequency of about 5 to about 100 bursts per second；- one or more electrodes (340, 45) housed within the enclosure；- a conduction medium (350) within the enclosure and electrically coupling the electrodes with the interface； andwherein the source of energy is configured to apply an electrical impulse through the interface of the enclosure transcutaneously through an outer skin surface of the patient to a nerve at a target region below the outer skin surface,wherein the electrical impulse is sufficient to modulate a nerve within the target region and insufficient to substantially modulate nerve(s) in the vicinity of the outer skin surface.
