Melanoma skin cancer sign: Diameter
Melanoma is the most serious type of skin cancer. The most important warning sign of melanoma is a change in the size, shape, or color of a mole or other skin growth, such as a birthmark.
- A change in diameter (width) is one thing to watch for. Call your doctor if:
- The width of a mole or skin growth is larger than 1/4 inch (6 mm), or about the size of a pencil eraser.
- Any mole seems to be growing, even if it is still smaller than 1/4 inch (6 mm).
Current as of: October 25, 2024
Author: Ignite Healthwise, LLC Staff
Clinical Review Board
All Ignite Healthwise, LLC education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.
Explore the Full Health and Wellness Library
Looking for easy to understand information you can trust? The health and wellness content is created and reviewed by clinicians to ensure accuracy. We suggest you use this resource as research for conversations with your doctor or those you care about.
Explore the LibraryCommunity and Health Events
We regularly host free events to help you stay informed, connected, and inspired. We offer local in-person gatherings and virtual sessions you can attend from the comfort of home. View our calendar for all upcoming events.
Explore all Events
