An actinic keratosis, also known as solar keratosis, enlarges slowly and usually causes no signs or symptoms other than a patch or small spot on your skin.

光化性角化病，也称日光性角化病，病损生长缓慢，而且除了皮肤上的斑块或小斑点，常常无任何症状或体征。

youdao

It's not uncommon for 40-something women to develop actinic keratosis-dry, red, flaky spots, often on the forehead, cheeks, or nose, Dr.Goldenberg says.

Goldenberg医生说，对于40多岁的女人来说，出现光化性角质病真是再平常不过了，这种病包括额头、脸颊或鼻子上出现干燥、红血丝、色斑的情况。

youdao

It's not uncommon for 40-something women to develop actinic keratosis-dry, red, flaky spots, often on the forehead, cheeks, or nose, Dr. Goldenberg says.

Goldenberg医生说，对于40多岁的女人来说，出现光化性角质病真是再平常不过了，这种病包括额头、脸颊或鼻子上出现干燥、红血丝、色斑的情况。

youdao

ALA-based compounds are approved in the U.S. as a treatment for actinic keratosis, a precancerous skin condition, but not for acne.

WSJ: As More Adults Get Acne, New Photodynmic Treatments Use Light