Bad spots? (4)
I believe the answer is:
acne
'bad spots?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for acne that I've seen before include "Skin rash" , "Problem to face in" , "Pimply ailment of adolescnce" , "Spotty complaint" , "Inflammation of glands in skin" .)