The present disclosure relates to a mobile device for domestic use by a patient for therapeutic action on himself/herself, comprising: a millimeter wave generator that generates millimeter wave radiation, a millimeter wave antenna that emits millimeter waves generated by said millimeter wave generator in a predetermined direction, a coupling element that couples the millimeter wave antenna to the millimeter wave generator and that transmits the millimeter wave radiation generated by said millimeter wave generator to said millimeter wave antenna, a control unit that controls the millimeter wave generator, and a user interface that allows a patient to change settings of the device.