A portable device for treating the bites or stings of insects and harmful creatures, comprising:&mdasha piezoelectric element (2) capable of producing a predetermined difference in electrical potential&mdashan actuating element (3) operable by a user and associated with said piezoelectric element (2) to impart to it a predetermined state of stress/deformation&mdasha discharge area (4) electrically connected to the piezoelectric element (2) and positionable in proximity to an area of a patient which has been bitten/stung to impart to it an electrical discharge generated by said difference in electrical potential characterised in that it comprises furthermore a monolithic containing body (5) capable of housing the piezoelectric element (2), the actuating element (3) and the discharge area (4).
