An effective treatment method for refractory skin diseases such as Vitiligo, Psoriasis Vulgaris and Palmoplantar Pustulosis. This treatment method is known as Excimer Light Phototherapy. This is a new treatment method that uses light with a new short wavelength of ultraviolet. 

This technique is effective for treating elbows, knees, and other conspicuous areas, which were considered difficult to treat in the past.