Bloody female constantly making complaint (7,5)
I believe the answer is:
scarlet fever
'complaint' is the definition.
(scarlet fever is a kind of health problem)
'bloody female constantly' is the wordplay.
'bloody' becomes 'scarlet' (I can't explain this - if you can you should give a lot more credence to this answer).
'female' becomes 'f' (abbreviation).
'constantly' becomes 'ever' (I've seen this before).
'scarlet'+'f'+'ever'='SCARLET FEVER'
'making' acts as a link.
Can you help me to learn more?
(Other definitions for scarlet fever that I've seen before include "Infectious disease of children" , "Infectious disease producing rash" , "Disease causing rash" , "complaint" .)