The invention relates to a method for irradiating or treating areas of the body with electromagnetic radiation from a radiation source, the area of the body including at least one irregularly outlined treatment area, which is determined and irradiated. The invention is characterized in that the area of the body is divided up into a number of sub-areas, which at least partly contain the treatment area, and a proportion of the treatment area contained in each sub-area is irradiated with a radiation dose sequentially or in a scrolled manner or step-by-step or in a targeted manner.
