A seborrheic keratosis is a non-cancerous skin tumour that originates from cells, namely keratinocytes, in the outer layer of the skin called the epidermis. Like liver spots , seborrheic keratoses are seen more often as people age.

Seborrheic keratosis is a common benign (noncancerous) skin growth. It tends to appear in middle age and you may get more as you get older. Seborrheic keratoses are not pre-cancerous, but they can resemble other skin growths that are. Your healthcare provider can help diagnose your seborrheic keratosis and remove it for you if you’d like.

A seborrheic keratosis (seb-o-REE-ik ker-uh-TOE-sis) is a common noncancerous (benign) skin growth. People tend to get more of them as they get older. Seborrheic keratoses are usually brown, black or light tan. The growths (lesions) look waxy or scaly and slightly raised. They appear gradually, usually on the face, neck, chest or back.

Seborrhoeic keratosis (American spelling - seborrheic keratosis) is also called SK, basal cell papilloma, senile wart, brown wart, wisdom wart, or barnacle. The descriptive term, benign keratosis, is a broader term that is used to include the following related scaly skin lesions :

Seborrheic keratosis is a benign (noncancerous) condition that can look like a mole or wart. It's caused by a buildup of skin cells and can happen anywhere on your body, but often appears...