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Skin color abnormalities are common pigmentation and deformity appearing mainly on the face, representing a disfigurement affecting many thousands of individuals. Multiple therapeutic modalities, including laser therapies, Argon, CO2, Ruby, Diode lasers et al., have been utilized with success. There are many kinds of laser, each with its own characteristics. We have used for treatment such different lasers for different lesions and types. This report will present the experience in YAG laser therapy of skin color abnormalities. MMB Model ND-YAG laser with contact and non-contact type handpiece 0.1 to continuous pulse duration was used, set at 2 to 25W. 175 cases were treated. These include hemangioma, pigmented navus, mole, spilus and others. We tried to achieved re-epithelization within 10 to 14 days. As a result, YAG laser used revealed the most effective, least damaging one for each case. And we have recognized that YAG laser's absorption is controlled by skin color, circulation, temperature and others. We have now known this treatment with YAG laser is a beneficial and important method of curing if we can get good control. Furthermore, when we have used the method of marking spots with black ink on the surface of pigmented area, we call stain, it has enabled good response and greater absorption of light. We presented if appropriate criteria are met, skin color abnormalities can be successfully treated by YAG laser therapy.

INDIATION AND EVALUATION OF Nd-YAG LASER THERAPY FOR SKIN COLOR ABNORMALITIES