The invention relates to a device (1) fortranscutaneous stimulation of a nerve of the humanbody, which device (1) comprises at least onestimulation electrode (2) and at least one referenceelectrode (3) for transcutaneous nerve stimulation, theat least one stimulation electrode (2) and the at leastone reference electrode (3) being connected to acontrol unit (4) and being able to be supplied with anelectrical current from the latter, and the at leastone stimulation electrode (2) and the at least onereference electrode (3) being arranged in or on ahousing (5) which is designed to be fitted on or in thehuman ear. To make the nerve stimulation effective andto make it easier to manage for the patient, it isproposed, according to the invention, that the housing(5) has a bow-shaped extension piece (6) designed to beinserted into the auditory canal, said bow-shapedextension piece (6) matching the shape of the entranceto the auditory canal or of the external auditorycanal, and with an electrode head (7) which is arrangedat the end of the bow-shaped extension piece (6) andwhich has two contact points (8, 9) for the twoelectrodes (2, 3).
