Sewn for saint having had a skin irritation (8)
I believe the answer is:
stitched
'sewn' is the definition.
(I know that sewn can be written as stitched)
'saint having had a skin irritation' is the wordplay.
I cannot really understand how this works, but
'saint' could be 'st' (abbreviation) and 'st' is found within the answer.
'had' could be 'd' (I've seen this in other clues) and 'd' is found within the answer.
'irritation' could be 'itch' (I've seen this before) and 'itch' is found in the answer.
A single letter 'e' remains which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'for' is the link.
Can you help me to learn more?
(Other definitions for stitched that I've seen before include "Fastened by sewing" , "Fasten by sewing" , "Joined up" , "Used a needle" , "Sewn" .)