SUCCESSFUL TREATMENT OF NEVUS OF OTA BY QS ALEXANDRITE LASERS (755 nm)

Sau Nguyen Huu

Abstract


Nevus of Ota is a facial congenital pigmentation disorder affecting
mainly the face. Nowadays, different types of pigmentation lasers have
been used to treat Nevus of Ota. Very few research to address the treatment results have been performed in Vietnam. Objective: To evaluate
the clinical efficacy of Qs Alexandrite lasers in treatment of Nevus of
Ota in Vietnamese people. Method: 35 patients with Nevus of Ota were
treated by 8 sessions of Qs Alexandrite laser 755 nm at monthly intervals. Clinical improvement was evaluated based on color of the Nevus
of Ota before, during and after treatment. Results: The color of Nevus
of Ota gradually improved after 2, 4, 6, 8 sessions. After 8 sessions of
treatment, excellent improvement accounted for 45,7%, and there was no
case of slight improvement. 100% brown nevus achieved excellent improvement, while dark blue nevus improved 35,7%. Only 29% Nevus of
Ota at the eyelids was found with hyperpigmentation after treatment.
94,2% patients were satisfied with the treatment. Conclusion: The laser
targets in Nevus of Ota are melanocytes and dermal melanosomes. After
treatment, the skin structure returns to normal appearance.

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