Complaint of maiden quarrelling, upset after call (8)
I believe the answer is:
ringworm
'complaint' is the definition.
(ringworm is a kind of disease)
'maiden quarrelling upset after call' is the wordplay.
'maiden' becomes 'm' (cricket abbreviation).
'quarrelling' becomes 'row' (a row is a quarrel or argument).
'upset' says the letters should be written in reverse.
'after' is a charade indicator (letters next to each other).
'call' becomes 'ring' (synonyms).
'm'+'row'='mrow'
'mrow' in reverse letter order is 'worm'.
'worm' put after 'ring' is 'RINGWORM'.
'of' acts as a link.
(Other definitions for ringworm that I've seen before include "Skin disease" , "Tinea" , "ailment" , "Fungal infection of the skin characterised by round patches" , "Problem with skin" .)