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”.
A halo nevus is a mole surrounded by a white ring or halo. These moles are almost always benign, meaning they aren’t cancerous. Halo nevi (the plural of nevus) are sometimes called Sutton nevi or leukoderma acquisitum centrifugum. They’re fairly common in both children and young adult
As you get older, you might notice brown or black spots appear on your skin. These spots are especially common on sun-exposed areas like your face and the backs of your hands. They’re called lentigines, or liver spots. It’s called lentigo because the spots can resemble lentils in color.
You might be wondering what this “skin tag” is (also known as a fibroepithelial polyp) and why some people need to remove it. Surely, some of you may be thinking this article is all about removing skin marks or tattoos – but it’s not. If you’ve seen someone with a certain balloon-like hanging skin, these are skin tags.