Nevus spilus is known to have a high recurrence rate following treatment with dermabrasion, cryotherapy or laser irradiation therapy while we have got much highly effect on nevus of Ota. To minimize recurrence, laser treatment was performed using a normal-pulsed ruby laser system (dual pulse width: 240μs~2ms) and Q-switched ruby laser system (pulse width: 30ns). This therapy was revealed to be highly effective as demonstrated by clinical results obtained from 36 clinical cases, and was partically usefull in treating of face and neck. After the epidermis on the treated area had been completely removed with normal-pulsed ruby laser, the addition of short pulse treatment with normal-pulsed ruby laser and more addition of Q-switched ruby laser irradiation improved reducing recurrence rate. The protokol was further improved with additional laser treatment using short pulses of 10J/cm2 and Q-switched ruby laser irradiation of 4~7J/cm2, 3 weeks after the first irradiation. The efficacy of this treatment protokol was judged excellent or good in 23 out of 36 cases (63.9%).
