liver spot

US /ˈlɪv.ər ˌspɑːt/
UK /ˈlɪv.ər ˌspɑːt/
"liver spot" picture
1.

a small, flat, brown or black spot on the skin, especially on the face or hands, caused by aging and exposure to the sun, not related to the liver

:
As she aged, she noticed more liver spots appearing on her hands.
Sunscreen can help prevent the formation of liver spots.