Abstract: This invention provides methods for treating wounds using localized electromagnetic radiation directed at excitable tissues, including affected tissues, nerves, muscles, and blood vessels. By controlling the wavelength, the wavelength bandwidth, pulse duration, intensity, pulse frequency, and/or variations of those characteristics over time, and by selecting sites of exposure to electromagnetic radiation, improvements in the function of the different tissues and organs can be provided. Responses can be monitored by using visible and nonvisible characteristics of wounds. Changes in wound characteristics can become more visible under RGB and blue light wavelengths.