Scrapes part of sleeve in case of shingles (6)
I believe the answer is:
scuffs
'scrapes' is the definition.
(scuffing is a kind of scraping)
'part of sleeve in case of shingles' is the wordplay.
'part of sleeve' becomes 'cuff' ('cuff' is part of 'sleeve').
'in' is an insertion indicator.
'case of' means to remove the middle letters (outsides of).
'shingles' with its centre removed is 'ss'.
'cuff' inserted within 'ss' is 'SCUFFS'.
(Other definitions for scuffs that I've seen before include "Grazes" , "Scrapes shoes while walking" .)