Seborrheic keratoses tend to run in fair-skinned families. People over 50 who have been exposed to the sun are more likely to develop this condition; however, it can develop in areas that are not exposed to the sun and younger people as well.
Because seborrheic keratoses can present in a wide range of colors and sizes, it is important to get to know the moles, freckles, sunspots and other blemishes on your skin so that you can identify any changes that may occur. Seborrheic keratoses can:
- Be flat or raised with a scaly surface
- Range in size from small to large (1 inch across)
- Range in color from white to black, but most appearing tan or brown
- Be round or oval-shaped
- Commonly form on the chest, neck, scalp, back and stomach
- Have a waxy and “stuck on” look