When Should You Worry About a Mole? Signs It May Be Cancerous

Most adults have at least a few moles, and the majority are harmless. Still, it’s natural to feel uneasy when you notice a new mole or one that has changed. So how can you tell when a mole needs a closer look? 

You should have a mole checked if it’s asymmetrical, has uneven borders, contains more than one color, is larger than a pencil eraser, or changes over time. A mole that itches, bleeds, or crusts over should also be examined. These signs don’t always mean you have a cancerous mole, but they’re worth checking early. 

At Sandhu Dermatology & Med Spa in West Palmdale, CA, our team provides thorough mole checks to help protect your skin health. Call today to learn more and schedule an appointment. 

How do moles form? 

A mole is a small growth made up of clusters of pigment-producing skin cells. Moles can be brown, black, tan, or pink, and they may be flat or raised. Most appear during childhood and young adulthood, though new moles can develop later in life. 

Genetics and sun exposure both play a role in how many moles you have. People with fair skin, many moles, large moles, or a family history of skin cancer are at higher risk. Regular skin checks are one of the best ways to catch a cancerous mole early, even if your moles have looked the same for years. 

When to worry about a mole 

Dermatologists often use the “ABCDE” guide to spot warning signs. Watch for moles with:  

• Asymmetry: An asymmetrical mole has two halves that don’t match in shape.
• Uneven borders: Edges that are blurry, jagged, or notched can be a red flag. 
• More than one color: Shades of brown, black, red, white, or blue within the same mole may signal a problem.
• Large size: A large mole wider than about 6 millimeters, or roughly the size of a pencil eraser, should be evaluated.
• Changes over time: Any change in size, shape, color, or height is one of the most important warning signs. 
• Itching or bleeding: Moles that itch, bleed, or don’t heal also need attention.

Not every unusual mole is cancer, but catching changes early makes treatment much simpler. 

How we check and treat concerning moles 

During a skin cancer screening, our team examines your skin from head to toe. We measure and document each mole’s size, shape, and color, and we take a closer look at any asymmetrical mole or spot with uneven edges. This helps us find a cancerous mole in its earliest stages. If a spot looks suspicious, we may recommend mole removal so the tissue can be tested. 

There are two common methods of mole removal. With surgical excision, the area is numbed, and the mole is removed along with a small border of surrounding skin, then closed with stitches. For moles closer to the surface, a shave removal uses a small blade to remove the mole without the need for stitches. Removal can also be an option for a large mole that rubs against clothing or affects your appearance. Many patients find the process quick and comfortable. 

Schedule a skin cancer screening in West Palmdale, CA  

If you’ve noticed an asymmetrical mole or any spot that’s changing, don’t wait to have it checked. A routine skin cancer screening helps catch problems before they become serious. At Sandhu Dermatology & Med Spa in West Palmdale, CA, our team will look closely at any spot that concerns you and explain your options for mole removal if needed. Call today to book your visit.