Abstract: A treatment apparatus for external application to a mammal body, comprising a housing, a transducer element, adapted to provide an output towards and/or into the mammal body, a switch element, adapted to activate the transducer element in accordance with a first predetermined condition and deactivate the transducer element in accordance with a second predetermined condition, a feedback element, adapted to provide at least one first feedback signal in response at least a third predetermined condition, and a resilient coupling element, adapted to operatively couple the transducer element to said housing.