Ota Nevus and Hori’s Macule

Facial pigmentation spots and patches are one of the biggest skin concerns of
Singapore women. Some pigmentations are difficult to manage while others are difficult to diagnose. However, Ota nevus and Hori’s macule are the exception and the easiest to manage. They only respond to laser treatment and almost always respond with near complete resolution.

Nevus of Ota

Nevus of Ota is a birthmark typically occurring on one side of the face. Frequently, it affects the skin around the eyes, forehead, nose, and cheeks. Besides skin, it may also involve parts of the eye or mouth.

It usually appears as blue-grey hyperpigmentation because there are many pigment cells found deep within the dermis of the skin. 40-50% of all cases of nevus of Ota are present at birth, while the rest typically develop during adolescence.

Laser treatments are the most effective in treating nevus of Ota. These include QS Nd:YAG, ruby laser, and alexandrite laser and they must be repeated many times ( at least 5-6 times). Alternatively, people may opt to cover the hyperpigmentation with camouflaging creams, foundation, or concealer.

Aside from their physical appearance, one has to be aware of the risk of glaucoma and malignant melanoma.

    Ota Nevus and Hori’s macule

    • image_slider

    Hori’s macule / nevus

    Hori’s macule is also known as acquired nevus of Ota-like macules (ABNOM) and is a fairly common facial pigmentation that is often under-diagnosed or mis-diagnosed as freckles or melasma. Not uncommonly, it may coexist with melasma.

    Often occurring on both sides of the cheek, the bean-sized pigmentation can appear from light brown, dark brown to dark blue in color. The nose, eyelids, forehead are sometimes affected as well. However, it does not affect the eyes or the mouth.

    Contrary to the nevus of Ota, Hori’s nevus appears in the third to fifth decades of life and is therefore an acquired condition, mostly occurring in Asian women.

    Hori’s nevus only responds to laser treatments with the Q-switched ruby laser, Q-switched alexandrite laser or Q-switched Nd:YAG lasers. Multiple sessions (at least 4 to 6 ) are usually necessary.

    Temporary darkening of the skin (post inflammatory hyperpigmentation) may occur after the first treatment. However, this usually settles from second treatment onwards and the improvement and lightening continues steadily with each session of laser treatment til it fades eventually.

    get started

    Your Journey To Healthier Skin Starts Here

    Make an Enquiry

    Got questions? Fill up this form and our clinic staff will revert as soon as possible.

      For faster response, call us at +65 6694 1121

      Chat with our friendly clinic staff through Whatsapp!

      Visit Us

      Start your skin health restoration journey with us today!

      Assurance Skin, Laser & Aesthetics

      Mount Elizabeth Novena Specialist Centre
      #10-22/23, 38 Irrawaddy Road ,
      Singapore 329563

      Mon, Tues, Wed, Fri: 9.00am-5.00pm;
      Thurs, Sat: 9.00am-12.30pm;
      Sun & Public Holidays: Closed

      Dr. Wong Soon Tee

      Consultant Dermatologist

      Dr. Wong Soon Tee

      Consultant Dermatologist

      Care and Professionalism Refined by
      Over 30 Years of Dermatology Experience

      • MBBS, Yong Loo Lin School of Medicine, Singapore
      • MRCP. Member of Royal College of Physicians, United Kingdom
      • FAMS, Fellow of Academy of Medicine, Singapore
      • Adjunct Assistant Professor, National University of Singapore
      • Visiting Consultant, University Dermatology Division, National University Hospital
      • Visiting Consultant, Aesthetic Plastic Surgery Centre, National University Hospital

      Why Choose Us

      Learn More

      Related Articles

      • Aesthetic Dermatology

        Freckles and Lentigines

        Freckles and lentigines are two of the most common hyperpigmentations that dermatologists encounter in their practice. Freckles and lentigines are two of the most common hyperpigmentations that dermatologists encounter in their practice. It will be good…
      • Aesthetic Dermatology

        Helios III Acne & Pigment Laser

        A non-ablative laser, Helios III is very effective for skin rejuvenation, lightening superficial and deep pigmentation. Pigment problems caused by…

        OBAGI NU DERM Skin care system

        NU DERM is a complete skin care system customized for overall skin rejuvenation- brightening, lightening and smoothening of the skin.