a panel 4 containing necessary control lights controls etc a helmet like arrangement is placed inside the canopy in such a way that it can be rotated back and forth a quarter of a circle above the head of the person being treated for reasons of illustration the helmet 5 is shown outside of the canopy 3 the bearing and rotation of the device may be accomplished in a manner which per se is previously know and which has been described in the patent se 510 410 mentioned in the introduction of this application and which is described below with reference to fig1 14 fig1 illustrates an electromagnetic radiation helmet comprising an outer canopy 1 mounted to a post 2 and an inner helmet 8 intended to be placed over the head in order to radiate the outer canopy 1 acts as a protection for cables drive motor circuit board and drive wheels see fig1 the laser diodes 1 on the helmet 3 are placed in vertical lines 17 which results in radiation along continuous vertical lines on the top of the head and the scalp by means of the drive motor 6 the inner helmet is turned alternately u00bc revolution a relay 13 acts to have the motor to change direction by means of a stop member 14 at the rim 4 which hits a switch arm 13 u2032 which causes the.