Malady

n. disease, illness (mental or physical); abnormal or disorderly condition

Illness (sometimes referred to as ill-health) can be defined as a state of poor health.
See more at Wikipedia.org...

Noun
1. any unwholesome or desperate condition; "what maladies afflict our nation?"
(hypernym) condition, status
2. impairment of normal physiological function affecting part or all of an organism
(synonym) illness, unwellness, sickness
(hypernym) ill health, unhealthiness, health problem
(hyponym) ague

(n.)
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.
  

(n.)
A moral or mental defect or disorder.
  

From the French maladie for illness.