Article in photo producing alarm (5)
I believe the answer is:
panic
'alarm' is the definition.
(alarm can mean panic or worry)
'article in photo' is the wordplay.
'article' becomes 'an' (indefinite article).
'in' indicates putting letters inside.
'photo' becomes 'pic' (I've seen this before).
'an' inserted inside 'pic' is 'PANIC'.
'producing' acts as a link.
(Other definitions for panic that I've seen before include "Sudden feeling of terror" , "Flap" , "Grass" , "displaying great fear" , "Agitation" .)