Source : Webster's Revised Unabridged Dictionary (1913)

Malady \Mal"a*dy\, n.; pl. {Maladies}. [F. maladie, fr. malade
   ill, sick, OF. also, malabde, fr. L. male habitus, i. e.,
   ill-kept, not in good condition. See {Malice}, and {Habit}.]
   1. Any disease of the human body; a distemper, disorder, or
      indisposition, proceeding from impaired, defective, or
      morbid organic functions; especially, a lingering or
      deep-seated disorder.

            The maladies of the body may prove medicines to the
            mind.                                 --Buckminster.

   2. A moral or mental defect or disorder.

            Love's a malady without a cure.       --Dryden.

   Syn: Disorder; distemper; sickness; ailment; disease;
        illness. See {Disease}.

Source : WordNet®

malady
     n 1: any unwholesome or desperate condition; "what maladies
          afflict our nation?"
     2: impairment of normal physiological function affecting part
        or all of an organism [syn: {illness}, {unwellness}, {sickness}]
        [ant: {health}, {health}]