Hori's Nevus
What is Hori's Nevus?
Hori’s Nevus is a hyperpigmentation disorder that affects almost exclusively Asian women in their 20s to 50s. Its appearance looks similar to Nevus of Ota, and it is also known as acquired nevus of Ota-like macules (ABNOM).
Hori's Nevus is fairly common and is often misdiagnosed as freckles or melasma. Occasionally, it may coexist with melasma. Unlike Nevus of Ota, it does not affect the eyes or the mouth.
Hori's Nevus is usually bilateral and affects mainly the cheeks. They appear as discrete bean-sized pigmentation that range from light brown, dark brown to bluish gray in color. Less commonly, they may appear on the nose, eyelids, temple and forehead.
Do I need to treat it?
Nevus of Ota is harmless and can be left alone. However, if it is cosmetically undesired and impacting your quality of life, you may choose to receive treatment for it.
How do I treat it?
Hori’s Nevus responds to laser treatments, especially with 1064 Nd:YAG lasers. Lasers work by breaking down dermal pigments. The 1064 Nd:YAG pico laser is able to reach deep dermal pigments safely in Hori's Nevus. Once the pigments are broken down, the smaller particles are then naturally cleared by the body.
Pico laser is a safe and effective treatment for Hori's Nevus. With increased efficacy and safety with laser systems, you can see an improvement within a few treatment sessions. Overall, usually 5 to 10 sessions are needed to treat Hori's Nevus.
Frequently Asked Questions
Is it painful?
Topical numbing cream is used for this treatment. We also use a cryo air cooler to improve your comfort. This laser is very well tolerated.
Is there any downtime?
Immediately after treatment, there will be some redness, swelling and darkening of the pigmented spots. This will subside over the next few days. You may return to activities immediately after. There will be no open wounds.
Where can I find Before/After photographs?
Due to Ministry of Health regulations, we are unable to post Before/After photos online. We are able to show them to you in person during your consultation on request.
What do I need to take note of?
For almost all laser treatments, there is a risk of post-inflammatory hyperpigmentation and hypopigmentation. To reduce this risk, you should avoid direct and prolonged sun exposure and use topical and/or oral sunblock for 7 to 10 days following treatment. You should also apply any creams that are provided to you after treatment.
