A complaint I'd not put in a guide (4)

I believe the answer is:

ague

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'a complaint' is the definition.
(ague is a kind of health problem)

I don't understand the remainder of the clue.

(Other definitions for ague that I've seen before include "Hot and cold fever" , "attack" , "Burning fever" , "Illness with fever and shivering, malaria say" , "Feverish fit" .)

I've seen this clue in The Globe and Mail, The Guardian and The Telegraph.

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