Is nevus of Ota harmless?
Nevus of Ota is typically benign, but some people may want to have it removed for cosmetic reasons. There are a variety of treatments available. Experts note that some of these treatments may lead to scarring.
Why does nevus of Ota occur?
Cause. Nevus of Ota is caused by the entrapment of melanocytes in the upper third of the dermis. It is found only on the face, most commonly unilaterally, rarely bilaterally and involves the first two branches of the trigeminal nerve. The sclera is involved in two-thirds of cases (causing an increased risk of glaucoma) …
How is nevus of Ota diagnosed?
Nevus of Ota is diagnosed clinically by physical exam that typically reveals unilateral hyperpigmented lesions within the V1/V2 trigeminal nerve distribution along the sclera, iris, eyelids, nose, forehead, cheeks, areas around the eye, or side of face.
Can nevus of Ota be treated?
Laser treatments are the most effective corrective approach to nevus of Ota, although they must be repeated more than once, with multiple approaches and applications. The laser treatments work to destroy the melanocytes that cause the bluish hyperpigmentation, with the goal of returning the skin to its natural pigment.
What does nevus of Ota mean?
Listen to pronunciation. (NEE-vus … OH-tah) A condition marked by brown, blue, or gray patches, usually on the inside of the eye and on the skin near or around the eye.
What is oculodermal melanosis (Nevus of Ota)?
Definition: Oculodermal melanosis (Nevus of Ota), also known as oculodermal melanocytosis, oculomucodermal melanocytosis, or congenital melanosis bulbi, is a benign mesodermal melanosis involving the distributions of the ophthalmic and maxillary trigeminal nerve with associated hyperpigmentation of the eye and its adnexa.
Should patients with nevus of Ota be screened for malignancy?
Conclusions: The results indicate that patients with nevus of Ota should undergo regular ophthalmological observation and be aware of the potential for malignancy. Keywords: Choroidal melanoma; gene mutation; nevus of Ota.
What is the difference between Nevus of Ota and Nevis of Hori?
Nevus of Hori is a condition almost identical to Nevus of Ota, but this condition is bilateral on presentation, as opposed to the unilateral Nevus of Ota. Disease processes associated with Nevus of Ota include glaucoma, malignant melanoma, and destruction of the dermis from dermatologic interventions.
Is oculomucodermal melanocytosis associated with uveal melanoma a risk factor for metastatic melanoma?
However Shields et al found that patients with uveal melanoma associated with oculodermal melanocytosis have a twice as likely risk for metastasis compared to those without melanocytosis. Oculomucodermal melanocytosis (Nevus of Ota) is a benign dermal melanocytosis, that results in hyperpigmentation of the sclera and ipsilateral face.