Diseases of Pigment

Picture of Solar Lentigo

Picture of Solar Lentigo

Solar lentigo is a harmless patch of darkened skin. It results from exposure to ultraviolet (UV) radiation, which causes local proliferation of melanocytes and accumulation of melanin within the skin cells (keratinocytes). Solar lentigos or lentigines are very common, especially in people over the age of 40 years. Sometimes they are also known as an "old age spot" or "senile freckle".

Source: Reproduced with permission from ┬ęDermNet NZ www.dermnetnz.org 2022