A back treatment apparatus (10), constituted of: a support member (50) arranged to support a lumbar region (130); a translation mechanism (210); and a control circuitry (100), the control circuitry arranged to control the translation mechanism to translate the support member along a plurality of paths and rotate the support member about at least one axis in a predetermined range of motion. Preferably, the plurality of paths is constituted of at least: a generally linear path along an axis generally perpendicular in relation to a plane defined by the support member; and a generally linear path along an axis generally parallel in relation to the plane defined by the support member. Preferably, the back treatment apparatus is portable.