The malady itself, one from which she had often suffered, a bilious fever—its cause therefore constitutional.
Mrs. Morland watched the progress of this relapse; and seeing, in her daughter’s absent and dissatisfied look, the full proof of that repining spirit to which she had now begun to attribute her want of cheerfulness, hastily left the room to fetch the book in question, anxious to lose no time in attacking so dreadful a malady.
There are no more uses of "malady" in the book.
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While in the meantime, cities crumble; education, security, medicine for every other malady known to man, charity, humanitarian aid—the whole world goes to pot so WICKED can do whatever they want to do.
James Dashner -- The Death Cure
I could normally "remove her from her service" for medical reasons, with his permission, of course, but to select her out regularly, and only her, before indications of an illness or malady was unusual indeed.