Abstract: A device for external medical treatment with light for treating and/or curing different illnesses includes a light emitting unit, arranged to abut against or be held near the body of an individual, and a drive device for the light emitting unit. The unit includes light emitting diodes or the corresponding, which light emitting diodes are arranged to emit light of different wavelength intervals. The drive device is arranged to control the light emitting unit to emit one or several lights during one or several predetermined times and to, in a pulsating manner, emit the light according to a predetermined pulse frequencies or series of pulse frequencies during such times. The light emitting unit includes a cover and a surface carrying the light emitting diodes, and where the light emitting diodes are positioned on the plate. The diode surface has a curved shape adapted to the body part to be treated.