Troubles any son may produce (6)
I believe the answer is:
annoys
'troubles' is the definition.
The answer and definition can be both to do with human feelings as well as being verbs in their -s form.
Perhaps they are linked in a way I don't understand?
'any son may produce' is the wordplay.
'may produce' indicates anagramming the letters (I've seen 'might produce' mean this (I've seen this in other clues)).
'any'+'son'='anyson'
'anyson' with letters rearranged gives 'ANNOYS'.
Can you help me to learn more?
(Other definitions for annoys that I've seen before include "Harasses, pesters" , "'Irritates, irks (6)'" , "Narks" , "Bugs" , "Hacks off" .)