Stress can exacerbate it (4)

I believe the answer is:

acne

(Other definitions for acne that I've seen before include "Youthful problem" , "sort of disease" , "Skin condition associated with pimples" , "Skin condition prevalent among teenagers" , "Skin rash" .)

I've seen this clue in The Wall Street Journal.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.