The nevus of Ota (oculodermal melanocytosis) is a pigmented, homogeneous macula that affects the lower branches of the trigeminal nerve and the sclera. It is more common in women. The injury may not be present at birth and it tends to persist throughout life. It is characterized by the proliferation of fusocellular melanocytes in the dermis and in the sclera. Patients with nevus of Ota has a significant risk of developing uveal melanoma, it is recommended therefore a yearly eye follow-up.
The nevus of Ota is a pigmentation disorder, congenital or acquired, that affects skin and mucous membranes. It shows up as blue maculas of variable size, usually unilateral and localized in the area of innervation of the first and second branches of the trigeminal nerve.
Dr. Fernando Ordás is one of the few dermatologists who treat the nevus of Ota with laser.
La Becker’s nevus is a large pigmented injury that occurs in patients with fair skin, accompanied by dense hair. The most common areas are shoulders and back and it occurs more frequently in males. Becker’s nevus is probably hereditary and often become more evident in adolescence along with the presence of hypertrichosis. It may be associated with disorders such as mammary hypoplasia or musculo-skeletal disorders.
Becker’s nevus is treated with the 755 laser, the Q.S. laser and the Neodymium Yag laser.