It's painful when touched - you need a nurse! (6)
I believe the answer is:
tender
I believe this is a double definition.
'it's painful when touched' is the first definition.
(I've seen this before)
'a nurse' is the second definition.
(a nurse tends to patients)
'you need' acts as a link.
(Other definitions for tender that I've seen before include "Make formal offer" , "Delicate or kindhearted" , "Offer for acceptance" , "Soft - gentle - nurse" , "'Soft, sensitive offer? (6)'" .)