Melasma vs. Sun Spots: What's Causing Your Dark Spots?

How to Tell the Difference—and When to See a Dermatologist

If you've noticed brown or grayish patches appearing on your face, you're not alone. Dark spots are one of the most common reasons patients visit Summerlin Dermatology, especially during the summer months here in Las Vegas.

While many people assume all dark spots are simply "sun damage," there are actually several different causes. Two of the most common are melasma and sun spots (also called age spots or solar lentigines). Although they may look similar, they're caused by different factors and often require different treatment approaches.

Understanding the difference is the first step toward healthier, more even-looking skin.

What Is Melasma?

Melasma is a common skin condition that causes patches of brown, tan, or gray pigmentation, most often on the:

• Cheeks

• Forehead

• Nose

• Upper lip

• Chin

Melasma is often triggered by hormonal changes, making it common during pregnancy or while taking certain hormonal medications. However, sun exposure is one of the biggest triggers, and the intense UV rays in Las Vegas can make melasma significantly worse.

Unlike simple sun spots, melasma usually appears in larger, symmetrical patches rather than individual spots.

What Are Sun Spots?

Sun spots—also known as age spots or solar lentigines—develop after years of cumulative sun exposure.

They're most commonly found on areas that receive the most sunlight, including:

• Face

• Hands

• Chest

• Shoulders

• Arms

Sun spots typically appear as small, well-defined brown spots rather than larger patches.

They become more common as we age, particularly for people who spend a lot of time outdoors.

Melasma vs. Sun Spots: How Can You Tell the Difference?

Although only a dermatologist can make an accurate diagnosis, there are some general differences.

Melasma

✔ Usually appears as larger patches

✔ Often affects both sides of the face equally

✔ Frequently linked to hormones

✔ Can worsen quickly with sun exposure

Sun Spots

✔ Individual, well-defined spots

✔ Usually appear gradually over many years

✔ Primarily caused by cumulative UV exposure

✔ Common on the face, hands, chest, and shoulders

Because treatment recommendations can vary, it's important to identify which condition you're dealing with before investing in over-the-counter products.

Can Dark Spots Be Prevented?

While not every case can be prevented, there are several ways to reduce your risk of developing or worsening pigmentation.

• Wear Sunscreen Every Day - Daily broad-spectrum SPF 30 or higher is one of the best ways to protect your skin from additional pigmentation.

• Wear Protective Clothing - Wide-brimmed hats and sunglasses provide additional protection during outdoor activities.

• Avoid Peak Sun Hours - Whenever possible, limit direct sun exposure during the hottest part of the day.

• Don't Pick at Your Skin - Picking at acne or other skin conditions can lead to post-inflammatory hyperpigmentation, another common cause of dark spots.

How Summerlin Dermatology Can Help

One of the biggest mistakes people make is assuming every dark spot should be treated the same way.

At Summerlin Dermatology, we begin with an accurate diagnosis before recommending treatment. Depending on the cause of your pigmentation, your personalized treatment plan may include:

• Medical-grade skincare products

• Prescription topical medications

• Chemical peels

• Laser treatments (when appropriate)

• Customized skincare recommendations

For some conditions, particularly melasma, treatment often focuses on careful management rather than a one-time solution.

When Is the Best Time to Treat Dark Spots?

Many patients are surprised to learn that while it's vitally important to protect your skin from the sun year-round, fall is often one of the best times to begin treating sun-related pigmentation. As UV exposure decreases, treatments such as chemical peels and certain laser procedures can often be performed more effectively with a lower risk of additional pigmentation.

That doesn't mean you should wait until fall to schedule your consultation. If you're noticing new or worsening dark spots this summer, now is the perfect time to come in for an evaluation. We'll identify what's causing your pigmentation, discuss your treatment options, and develop a personalized plan so you're ready to begin treatment when the timing is right.

Don't Guess—Get the Right Diagnosis

Not all dark spots are created equal. Understanding whether you're dealing with melasma, sun spots, or another form of pigmentation can help you choose the most effective treatment and avoid unnecessary frustration.

📞 Call us at 702-243-4501 or Request an Appointment Online to schedule a consultation with Summerlin Dermatology and learn which treatment options are right for your skin.