Blemishes in Occidental cultural matters (5)
I believe the answer is:
warts
'blemishes' is the definition.
(wart is a kind of blemish)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for warts that I've seen before include "feature prominently on 12,14 across [UGLY SISTERS]" , "unwanted lumps" , "Skin growths" , "Verrucas" .)