Answer :
Final answer:
When the cause, or etiology, of a disease is unknown, the disease is termed idiopathic. This is different from nosocomial and iatrogenic diseases, where the causes are known as hospital contraction and medical treatment, respectively.
Explanation:
When the root cause or origin, also known as the etiology, of a disease is unknown, the disease is termed as Idiopathic. The term idiopathic is used in the medical field to denote conditions or diseases where the primary cause is not clear. It differs from Nosocomial diseases, which are acquired in hospital settings. An example of a nosocomial disease is a surgical site infection caused by contaminated medical equipment.
Iatrogenic diseases, on the other hand, are resulting from medical treatment or diagnosis processes. An instance is a condition like necrotizing fasciitis that may be contracted after wound treatment. In these cases, the etiology is known, unlike idiopathic diseases, where it remains elusive.
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