Hori’s Naevus presents as benign (harmless) blue-grey to grey-brown patchy and spotty pigmentation on the prominence of the cheeks. The condition usually appears in adulthood and is most common in middle-aged Asian women.
The condition is often misdiagnosed as it may resemble or coexist with melasma. It’s also known as Acquired Naevus of Ota-like Macules.
Genetics and hormones play a role in the development of Hori’s Naevus. When melanin pigments are present in the dermal layer of the skin, it causes a condition known as dermal melanocytosis. Dermal melanocytosis is a spectrum of conditions and includes Mongolian spots, naevus of Ota, Hori’s Naevus and naevus of Ito.