What Are Sun Spots on Your Skin?
Sun spots are dark circles that appear on your skin after sun exposure. They are painless, smooth and flat, and tend to be at least a little larger than freckles.
People also sometimes refer to them as “age spots” or “liver spots.”
What Causes Sun Spots?
Sun spots are caused by repeated UV light exposure—usually from years in the sun, but they can also be caused by tanning beds.
You have cells in your skin that produce melanin, which makes your skin darker after sun exposure.
Scientists believe that suns pots happen when those melanin-producing cells become hyperactive after years of sun exposure. At the same time, they start to cluster together. Then, when you expose those clusters to even more sunlight, they produce darker spots that stand out against the paler skin nearby.
Sun spots tend to occur in people with naturally lighter skin tones in the first place. And they tend to occur on areas that are repeatedly exposed to a lot of sun.
Are Sun Spots Cancerous?
What we call sun spots are not cancerous. In fact, sun spots are harmless and pain free.
That means if you have a spot on your skin that is raised, uneven, sore, painful, or otherwise worrisome, you should have it checked by a doctor ASAP. Those are not characteristics of sun spots. (Learn more about skin cancer awareness in our blog.)
How Do I Prevent Sun Spots?
Whether you already have them or not, the key to preventing sun spots from forming or from reappearing is protecting your skin from the sun. That means lots of sunscreen, shade, sun-protective clothing, and just plain staying indoors.