Abstract: The disclosed apparatus includes a generator which is controllable by means of a control circuit and produces high frequency pulses of adjustable repetition frequency and duration. It also includes a circuit which produces a d.c. voltage and a pulsating d.c. voltage for ionization, as well as pulses of specific shape and variable repetition frequency for the faradization of the tissue to be treated. A treatment head features a disk-like insulating plate which is metal-coated on one side in an annular pattern and on the other side in a spiral pattern. Various specific circuit elements and blocks are described. The type of apparatus involved is intended for use in therapy, among other possible applications.