Animal treatment apparatus, phototherapeutic apparatus, and animal treatment method

A phototherapeutic apparatus, comprising:

• a light emitting unit configured to emit first light having a peak wavelength in a range of 305 to 315 nm and second light having a peak wavelength in a range of 315-335 nm and configured to irradiate an affected area;
• and
• a controller configured to switch the light that irradiates the affected area between the first light and the second light.

A method of treating a non-human animal subject, comprising irradiating, one or more times, light having a peak wavelength in a range of 315-335 nm to an affected area of the animal subject.

A method of treating a non-human animal subject, comprising:

• performing a first step comprising irradiating skin of the non-human animal subject with light having a first peak wavelength, which is in a range of 315-335 nm at a first irradiation dose;
• and
• one or more days after the first step, performing a second step comprising irradiating the skin with light having a second peak wavelength in the range of 315-335 nm at a second irradiation dose, wherein the second peak wavelength is shorter than the first peak wavelength, and/or the second irradiation dose is higher than the first irradiation dose.