Noticing a new spot on your skin can feel unsettling. You might wonder if it’s just a harmless sun spot or something more serious. Understanding the difference between sun spots and skin cancer can help you feel more confident and know when it’s time to take action.
What Is a Sun Spot?
Unlike sunspots on the sun (spelled without the space), sun spots on your skin develop after repeated exposure to ultraviolet (UV) light. Over time, this exposure causes your skin to produce excess pigment, which creates darker areas. These are also known as age spots, liver spots, or solar lentigines. Sun spots are very common and usually appear on areas that receive the most sun, such as the face, arms, and hands. They tend to develop gradually after years of exposure.
What Do Age Spots Look Like?
Age spots have a consistent and recognizable appearance. They are flat, smooth, and evenly colored, typically ranging from light tan to medium brown. Most are round or oval and look similar to other sun spots.
A key feature is that they don’t change quickly. They tend to remain stable over time, which helps distinguish them from more serious conditions. This predictable pattern is one reason they are considered harmless.
Are Liver Spots Harmful or Dangerous?
Sun spots are not cancerous and usually don’t require treatment. They are benign and are often only addressed for cosmetic reasons. In most cases, they don’t pose a direct health risk.
However, they are a sign of long-term UV exposure. Over time, UV damage can increase the risk of skin cancer.
What Is Skin Cancer?
Skin cancer occurs when skin cells grow uncontrollably after being damaged, most often by UV radiation. This damage can change the cells’ DNA, leading to abnormal growth and tumor formation.
It is the most common type of cancer. According to the CDC, more than 4.9 million Americans were treated for one of the several types of skin cancer between 2007 and 2011. While that may sound concerning, many types of skin cancer are highly treatable when found early.
What Does Skin Cancer Look Like in Early Stages?
Skin cancer doesn’t always look the same. It may appear as a new growth or as a change in an existing mark. Some spots may grow, while others change in shape, size, or color.
Another warning sign is a sore that doesn’t heal.
In general, any spot that looks new, unusual, or different from the rest of your skin should be taken seriously.
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How to Tell the Difference Between Sun Spots and Skin Cancer
Sun spots and skin cancer can look similar at first. That’s why it’s important to focus on patterns, symptoms, and changes over time, not just appearance.
Skin Cancer vs. Sun Spot Appearance
Sun spots are usually light to medium brown and have a simple, uniform shape. Most sun spots look alike and don’t stand out individually.
Skin cancer often appears more irregular. It may have uneven edges, multiple colors, or an unusual shape. Some skin cancer lesions may be raised or have a rough texture.
Skin Cancer vs. Age Spot Symptoms
Sun spots typically don’t cause symptoms. They are painless and don’t itch, bleed, or feel uncomfortable. Most people notice them only because of their appearance.
On the other hand, skin cancer may cause noticeable symptoms. A spot might itch, bleed, crust over, or become tender. Some areas can develop into sores that don’t heal. These are important warning signs.
Skin Cancer vs. Liver Spot Changes Over Time
Sun spots tend to stay the same once they appear. They may darken slightly, but don’t usually change quickly. This stability is a key reason they are considered harmless.
Skin cancer often changes over time. A spot may grow, shift shape, or develop new colors. These changes are one of the most important signs to watch for.
Skin Cancer vs. Sun Spot Location
Sun spots usually form in areas with the most sun exposure, such as the face, neck, arms, and hands. These are the areas where UV damage builds up over time.
Skin cancer can appear anywhere on the body, not just sun-exposed areas, but complexion does play a role. For lighter-skinned people, skin cancer primarily develops on areas that get the most sun exposure. However, for darker-skinned people, that’s not always the case. 30-40% of skin cancers in Blacks are found on the soles of the feet. In fact, the musician Bob Marley developed an aggressive form of skin cancer under a toenail. That’s why it’s important to do regular checks of your entire body.
When to Worry About a Spot or Skin Change
You should consider getting a spot checked if it changes in size, shape, or color. A new or unusual mark may also be a reason to seek attention. A sore that doesn’t heal is another key warning sign. Even if you’re unsure, it’s always okay to ask a healthcare provider. Early action can make a meaningful difference. The 5-year survival rate when caught in the early stages is 98%, but that drops to 22% when diagnosed at Stage IV.
ABCDE Rule for Skin Cancer Detection
If you’re concerned about a spot on your skin, you can use the ABCDE rule to help assess whether a spot could be skin cancer:
- A for asymmetry: One half looks different from the other
- B for border: Edges are uneven or unclear
- C for color: Multiple or uneven shades
- D for diameter: Larger than usual or growing
- E for evolving: Changes over time
How to Protect Your Skin Every Day
Daily habits can reduce your cancer risk. Limiting UV exposure is one of the most important steps you can take. Wearing sunscreen, protective clothing, and hats helps protect your skin. It’s also important to check your skin regularly, including a monthly self-check at home. Knowing what’s normal for you makes changes easier to spot so that you can discuss them with your doctor.
Should You Get A Skin Cancer Screening?
The United States Preventive Services Task Force has not found any scientific evidence that skin cancer screenings reduce the risk of death. That means if you don’t have a history of skin cancer and don’t notice any unusual changes to your skin, a screening generally isn’t recommended.
Cancer Support in Queens and New York City
If you’re concerned about skin cancer or any cancer diagnosis, you’re not alone. Support can make a meaningful difference at every stage.
SHAREing & CAREing provides support for survivors, thrivers, caregivers, and families across Queens and New York City, including those who are uninsured or underinsured. Our services include helping to find free or low-cost treatment options, support groups, insurance claim navigation, and cancer screening reminders.
Sources
- ABCDEs of Skin Cancer, Cleveland Clinic, August 2025
- Bob Marley Should Not Have Died of Melanoma, The Skin Cancer Foundation, March 2024
- Sun Spots vs. Skin Cancer: How to tell the difference, Kaiser Permanente, January 2026
- Skin Cancer Information, The Skin Cancer Foundation, 2026
- What You Should Know About Skin Cancer Screening, Memorial Sloan Kettering Cancer Center, 2026