Medic having issue about desire (7)
I believe the answer is:
'medic' is the definition.
(I've seen this before)
'issue about desire' is the wordplay.
'issue' becomes 'son' (issue can mean someone's offspring).
'about' indicates putting letters inside.
'desire' becomes 'urge' (I've seen this before).
'son' placed around 'urge' is 'SURGEON'.
'having' acts as a link.
(Other definitions for surgeon that I've seen before include "Naval doctor" , "Theatre worker" , "Medical practitioner - go nurse (anag)" , "Theatre operator" , "One operating in theatre" .)