The invention relates to a back massage device of the type that comprises multiple rotary brushes mounted on a support, whereby the brushes are driven mechanically by a motor system and the support is embedded in a wall of a shower area. The invention is characterised in that the device includes an automatic system for moving the brushes perpendicularly to the wall, such that the device can occupy a stowed position in which the brushes do not protrude from the wall and an operating position in which the brushes protrude from the wall.
