Complaint jointly suffered by scrubbers, perhaps? (10,4)
I believe the answer is:
housemaids knee
'complaint' is the definition.
(housemaid's knee is a kind of disease)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for housemaids knee that I've seen before include "complaint to a servant?" , "joint tenderness" , "Joint inflammation" .)