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Clinically Reviewed by: Angelica McWilliams, Licensed Advanced Esthetician

Freckles are small, genetic spots that darken in summer and fade in winter. Sun spots (also called age spots or solar lentigines) are flat brown patches caused by years of sun exposure, and they stay year-round. Both are usually harmless. The exception is a spot that is rough, scaly or changing, which needs a dermatologist’s eyes. Below you’ll find a side-by-side comparison, a checklist for spotting warning signs, and what you can do about spots you don’t want.

TL;DR

Freckles are inherited, show up in childhood, are small, and fade when sun exposure drops. Sun spots are larger, appear in adulthood, and don’t fade on their own.
“Age spots” and “sun spots” are often used for the same thing. Doctors also use “sun spot” for rough, scaly actinic keratoses, which can become skin cancer.
Smooth and flat is reassuring. Rough, scaly, bleeding, growing or newly different spots should be checked by a dermatologist.
Daily SPF 30+ broad-spectrum sunscreen and shade protect against new spots. Professional options can lighten existing sun spots.

Freckles vs. sun spots at a glance
What freckles are
What sun spots are
How to tell which one you have
When a spot needs a dermatologist
Other reasons brown spots appear
Preventing new freckles and sun spots
Perspective: what we see in the treatment room
Treatment options for sun spots at our Portland clinic
Ready to have your spots looked at?
FAQ
Sources

Freckles vs. sun spots at a glance

The two look similar from across the room. Up close, they differ in cause, timing and behavior.

Feature	Freckles (ephelides)	Sun spots / age spots (solar lentigines)
Main cause	Genetics, triggered by sun	Cumulative sun exposure over years
When they appear	Early childhood	Adulthood, more common after 50
Size	Small, a few millimeters	Larger, from pencil-eraser size to a small coin
Color	Light to medium brown or tan, often warm-toned	Tan to dark brown, sometimes deeper
Edges	Often irregular	Usually clearer, more defined
Seasonal change	Darken in summer, fade in winter	Persist all year
Where	Sun-exposed skin, often in a scattered pattern	Face, hands, shoulders, chest, other sun-exposed areas

The details behind the table come from several medical and reference sources. Harvard Health describes freckles as small tan or brown spots that usually develop in childhood on sun-exposed skin and fade in winter. It describes age spots as larger spots that develop in adults from sun exposure or past sunburns. WebMD says freckles typically first appear around age 2 or 3. It adds that solar lentigines become common from 50 onward, don’t fade, and have clear borders.

What freckles are

Freckles are a genetic trait. Nebraska Medicine explains that they’re associated with eye, hair and skin color rather than being a marker of sun damage. That surprises many people. You can have a face full of freckles because of your family tree, not because you spent too many summers outside.

Sun still plays a role. Freckles darken with ultraviolet exposure and lighten when it drops, which is why many people see them multiply in July and almost vanish by February. DermNet draws the same line: freckles fade without ultraviolet stimulation, while lentigines persist.

There is one caution. The Conversation notes that freckles are harmless in themselves but tend to go along with fair skin, which carries a genetically higher skin cancer risk. The freckles are not the problem. The skin type that comes with them is the reason to be careful in the sun.

What sun spots are

Sun spots, in the way most people use the phrase, are solar lentigines, also called age spots or liver spots. They are flat, painless patches of extra pigment that build up where skin has seen years of UV light. Nebraska Medicine says they reflect cumulative sun damage and are typically about the size of a pencil eraser.

Harvard Health adds that age spots range from pink to tan to brown, are bigger than freckles, are usually oval, often show up in clusters, and are harmless. Unlike freckles, they don’t take a winter break. The Conversation puts the key point simply: sun spots will not fade with time.

“Age spots” and “sun spots” are not always the same thing

This is where the confusion starts. Many dermatology offices treat “sun spots” and “age spots” as synonyms. But Harvard Health uses “sun spots” for actinic keratoses, which are a different thing. Those are rough, scaly patches that can develop into skin cancer. Dr. Mikael Horissian, a Geisinger dermatologist quoted by Harvard, says the biggest difference is texture. Age spots are smooth and flat. Actinic keratoses usually feel rough and scaly.

So when you read about sun spots online, check which meaning the page uses. If your spot is smooth, flat and brown, you are almost certainly in age spot territory. If it is rough, crusty or scaly, treat it as a medical question.

Texture differences between age spots and actinic keratoses

How to tell which one you have

Run through these questions in order. They won’t replace an exam, but they point you in the right direction.

Did it appear in childhood? Spots that showed up before your teens, especially on fair skin with light or red hair, are most likely freckles.
Does it change with the seasons? If it darkens in summer and fades in winter, it behaves like a freckle. If it looks the same in January and July, it behaves like a lentigo.
How big is it? Tiny pinpoint spots lean freckle. Spots the size of a pencil eraser or larger lean sun spot.
How does it feel? Smooth and flat is reassuring. Rough, dry or scaly means you should get it looked at.
Where is it? Lentigines gather on the places that have collected the most sun over decades: face, backs of hands, shoulders, upper chest.
How old are you? New, persistent flat spots in your 40s, 50s and beyond are usually sun spots, not new freckles.

What about melasma?

Melasma is another cause of brown patches, and people often mix it up with freckles and sun spots. The Merck Manual lists melasma, freckles, lentigines, moles and melanoma side by side among the causes of localized hyperpigmentation. That list is a good reminder that several different conditions can look alike. Melasma is its own pigment condition, and it can respond differently to treatment than a sun spot does. Heat and hormones are both often discussed as factors. If your brown areas are broad patches rather than distinct individual spots, ask a licensed professional to assess them before you pick a treatment.

When a spot needs a dermatologist

Most freckles and sun spots are harmless. But slow-growing melanomas can initially look like sun spots, and sun spots themselves signal long-term UV exposure. The Conversation says sun spots increase the risk of other skin cancers in that area. It advises seeing a doctor if a spot changes in size, shape or color.

Book a dermatology visit if you notice any of the following:

A new spot that looks different from your other spots.
A spot that grows larger, or becomes eroded, ulcerated, bleeding or oozing. Nebraska Medicine lists these as reasons for an appointment.
A patch that feels rough, dry or scaly. Harvard Health says actinic keratoses can develop into skin cancer, so any such spot should be shown to a doctor.
A spot that changes color, shape or size over weeks or months.

Get any spot like this diagnosed first. Cosmetic treatment of pigmentation comes after a clinician has ruled out anything concerning. Our licensed team is happy to look at a spot during a consultation and to recommend a dermatologist visit when something calls for one.

Other reasons brown spots appear

Not every dark mark is a freckle or a sun spot. The Merck Manual says localized hyperpigmentation can come from skin injuries, inflammation, reactions to sunlight or abnormal growths. Widespread darkening can come from hormonal changes, internal disease, medications or heavy metals. If spots show up suddenly and in large numbers, or after starting a new medication, bring that up with your doctor.

One common cause is post-inflammatory hyperpigmentation. HealthyChildren.org, from the American Academy of Pediatrics, says it can follow acne, eczema, rashes, insect bites, allergic reactions and psoriasis. It may linger after the original inflammation has settled. If your marks trace back to breakouts, this article on turmeric for acne scars covers how people approach marks left behind by acne.

Preventing new freckles and sun spots

You can’t change the genes behind freckles. You can slow the damage that creates sun spots and makes freckles darker. The American Academy of Dermatology recommends broad-spectrum, water-resistant sunscreen with SPF 30 or higher every morning, shade when the sun is strongest between 10 a.m. and 2 p.m., and protective clothing including a wide-brimmed hat and UV-blocking sunglasses. Medical News Today, citing the AAD, adds reapplying every 2 hours outdoors or after swimming or sweating, and avoiding tanning beds.

Woman wearing sun-protective clothing in shade

The AAD’s 2025 survey found that more than two in five Americans don’t know sunscreen can prevent dark spots and premature aging. It also found that four in ten adults have wrinkles or dark spots they believe come from the sun, and 68 percent of those are bothered by them. If you’re in that group, you’re far from alone.

Portland tip: cloud cover doesn’t make daily sunscreen optional. Plan on SPF 30 or higher all year, and reapply on sunny summer weekends at the coast, on the river or on the trail.

Perspective: what we see in the treatment room

We meet many Portland clients who ask whether the brown spots on their cheeks are freckles or sun damage. The honest answer is that it takes a trained eye and a good look in clinical lighting. Freckles and sun spots can sit side by side on the same face.

Our approach starts with a free consultation. We look at the spot’s size, color, texture and distribution, and we ask when it appeared and whether it changes with the seasons. If anything looks unusual, we send you to a dermatologist before any cosmetic work. That order matters to us.

Once we know what we’re working with, treatment is personalized. Many clients with sun-related pigment come to us for an IPL photofacial, a light-based treatment designed for skin rejuvenation. Others do well with a chemical peel or microneedling, depending on skin type, goals and downtime. We design plans for the Pacific Northwest climate, where UV exposure is lower in winter and many people prefer to treat in the cooler months.

Whatever the plan, results last longest when you pair treatment with daily sunscreen. A treated area that gets sun again can darken again, and we’d rather help you keep your results than just create them.

Angelica McWilliams, Licensed Advanced Esthetician

Treatment options for sun spots at our Portland clinic

Freckles are often a trait people love, and many choose to keep them. Sun spots are different: they stay put, and many people want them softer or gone. Here are the treatments we offer that clients commonly consider for sun-related pigment and uneven tone, with our published prices.

Treatment	Price
IPL Photo Rejuvenation, single area	$160 per area
IPL Photo Rejuvenation, face and neck combo	$280
PhotoFacial	$215
Microneedling, single area	$185 per area
MandeliClear with Vitamin A Accelerator	$175
VI Peel Original	$300

Which one fits depends on your skin, your spots and how much downtime you want. That is exactly what the consultation settles. For more background, read our guides on how to treat skin pigmentation, top pigmentation treatments and repairing post-summer sun damage. If you want to see how light-based care works, our page on IPL photofacial treatment walks through it.

Ready to have your spots looked at?

If you’ve been wondering whether your spots are freckles, sun damage or something else, we’ll take a look at no cost. Our licensed team will explain what we see, tell you honestly whether treatment makes sense, and refer you to a dermatologist if a spot needs a medical opinion. There is no pressure to book anything.

Book a free consultation at Laser Skin Solutions Portland and bring your questions. We’re in Portland’s Northwest district.

FAQ

Are freckles only from sun damage?

No. Freckles are largely a genetic trait linked to your hair, eye and skin color, and Nebraska Medicine does not consider them a marker of sun damage. The sun makes them darker and more visible, but it doesn’t create the tendency to have them. Sun spots, by contrast, do reflect cumulative sun exposure.

Do freckles turn into sun spots?

Not in a simple way. Freckles are a separate type of spot that fades with less sun, while sun spots are persistent patches built up over years. You can have both at once, and years of unprotected sun on a freckled face can add sun spots over time. Daily sunscreen helps protect against both.

Can a sun spot be melanoma?

A true age spot is a harmless, smooth, flat pigment change. But slow-growing melanomas can initially look like sun spots, according to The Conversation. A spot that is new, different from your others, growing, bleeding or changing color should be seen by a dermatologist promptly.

How do I tell sun spots from age spots?

In everyday use they are often the same thing: flat brown spots from sun exposure. Harvard Health, though, uses “sun spots” for rough, scaly actinic keratoses that can become cancer. If your spot feels rough or scaly, have a doctor look at it. If it is smooth and flat, it’s most likely an age spot.

Will freckles come back after treatment?

Because freckles are genetic and respond to sunlight, new ones can appear again with sun exposure. Treated sun spots can also darken if the area is not protected. Daily SPF 30 or higher and shade during peak sun hours are the best ways to keep your results.

Freckles vs. Sun Spots: How to Tell the Difference

TL;DR

Table of Contents

Freckles vs. sun spots at a glance

What freckles are

What sun spots are

“Age spots” and “sun spots” are not always the same thing