Who gets seborrheic keratoses?
In most people, seborrheic keratoses first appear in middle age or later. People who are most likely to get these growths have family members with seborrheic keratoses.
Sometimes the growths appear during pregnancy or after estrogen replacement therapy. Children rarely have these growths.
What causes seborrheic keratoses?
The cause of seborrheic keratoses is unknown. We do know the following:
- Seborrheic keratoses seem to run in families. Some people seem to inherit a tendency to get many of these growths.
- Some studies suggest that sun exposure may play a role. But we know that these growths appear on skin that gets sun and skin that is always covered. So more research is needed.
- Seborrheic keratoses are not contagious. These growths may seem to multiply and spread to other parts of the body. The truth is, this does not happen.
Learn more about seborrheic keratoses: