On the facial skin, a gray-brown spot quietly appears, symmetrically distributed on the cheekbones, making the originally radiant face become "dull". Many people's first reaction is that this is the famous melasma, however, it is actually a brown-blue nevus on the cheekbones.

Zodiac brown-blue nevus, also known as malar mother spot, acquired nevus of Ota, and folks also call it "dermal spot" or "deep spot", is a common pigmented skin disease. Its age of onset is concentrated between 25 and 45 years old, overlapping with the high-incidence age group of chloasma, and it also has similar appearances. It may even appear on the same person's face at the same time, which is very easy to confuse. But we can make a simple distinction through the following features:

Color difference: The zygomatic brown-blue nevus is gray-brown, blue-brown or black-brown, with a faint gray; while the color of chloasma tends to be tan, dark brown with a slight red hue when dark.

Shape characteristics: The zygomatic brown-blue nevus is mainly scattered circular spots, about 1-3mm in size; chloasma is mostly diffuse patches.

Distribution area: The zygomatic brown-blue nevus is mainly distributed in the zygomatic area, and may also spread to the temporal area, forehead, eyelids and nose wings; melasma is more common in the zygomatic cheeks, and may also affect the periorbital area, forehead, upper lip and nose.

The incidence of zygomatic brown-blue nevus is closely related to specific races and genders. It is mainly seen in East Asian yellow races, and most of the patients are female. Some patients have a family history of genetics. At present, the cause of the disease has not been fully clarified, but it may be related to the following factors:

Endocrine factors: Endocrine disorders may affect skin metabolism and pigmentation.

Influence of sun exposure: Excessive exposure to ultraviolet rays stimulates melanocytes, prompting them to secrete more melanin.

Genetic factors: Family genetic background may increase the risk of disease.

Gynecological diseases: Hormone imbalance may be related to the occurrence of malar nevus.

Cosmetic irritation: Long-term use of cosmetics containing adverse ingredients or allergic reactions may induce this disease.

From a histopathological point of view, malar nevus is mainly manifested as small spindle-shaped melanocytes scattered in the upper dermis (especially below the papillary layer).

Zodiacal brown-blue nevus generally has no subjective symptoms, but because it affects the appearance, and with age, the color of the spot may deepen and the area may expand, so it is recommended to treat it as soon as possible. Early intervention can not only achieve better treatment results, but also reduce treatment costs.

The treatment idea is clear: through the selective photothermal effect of Q-switched laser, it targets the melanocytes in the dermis, breaks up the pigment particles, and allows them to be metabolized and absorbed by the human defense system without damaging the surrounding tissues.

Compared with traditional nanosecond lasers, picosecond lasers not only retain the selective photothermal effect, but also produce stronger photomechanical effects due to the ultra-short pulse width. The impact of photomechanical waves can make the target color base more fragmented, while the picosecond pulse width significantly increases the energy density and reduces thermal damage, thereby reducing the risk of post-inflammatory pigmentation (PIH).

Because the pigment is deposited in the dermis, it cannot be completely exploded at one time. Usually 4-6 treatments are required, with an interval of 3-6 months between each treatment. The treatment effect is accurate, no damage, no scars, little pain, and high safety.

Temporary hypopigmentation or hyperpigmentation may occur after laser surgery, which generally disappears on its own in 3-6 months. Strict sun protection is required after surgery to prevent hyperpigmentation. The scab area should be patiently allowed to fall off naturally and avoid self-removal or scratching. The recurrence rate of zygomatic brown-blue nevus is low after healing. Early treatment brings peace of mind.

The core founding team of Suzhou Foremed Legend Medical Technology Co., Ltd. comes from well-known universities at home and abroad, such as Peking University. Foremed Legend focuses on the design, development and application of high-end medical aesthetic optoelectronic equipment based on compliance and product strength, and is committed to becoming a leading company in the field of high-end medical aesthetic optoelectronic equipment, a provider of integrated diagnosis and treatment intelligent solutions, and a pioneer of medical aesthetic data integration platform.

Through tackling a series of underlying key technologies, Foremed Legend has independently developed a number of high-end medical equipment such as picosecond laser therapy devices, long pulse laser therapy devices, intense pulse light therapy devices, photoacoustic imaging skin detection devices and cold air therapy devices, and continues to deepen the research and development of core product technologies, using better technical solutions to benefit the vast number of beauty seekers.

Adhering to the principle of technology for good, Foremed Legend will work with industry and ecological partners to bring more safe and effective medical aesthetic optoelectronic equipment and integrated diagnosis and treatment solutions to the global medical aesthetic market.