Which term means unknown cause?

Which term means unknown cause?

• A. Idiopathic
• B. Aphasia
• C. Nephr/o
• D. Pneumonia

Answer: (A)

Unknown cause is described with the term idiopathic. When a disease arises without an identifiable origin after evaluation, clinicians label it idiopathic. Aphasia is a language disorder caused by brain injury, not a descriptor for unknown cause. Nephr/o is a kidney-related combining form used in anatomy and pathology terms, not for describing cause. Pneumonia is an infection of the lungs with a defined infectious cause, not unknown. So the term that means unknown cause is idiopathic.

Unknown cause is described with the term idiopathic. When a disease arises without an identifiable origin after evaluation, clinicians label it idiopathic. Aphasia is a language disorder caused by brain injury, not a descriptor for unknown cause. Nephr/o is a kidney-related combining form used in anatomy and pathology terms, not for describing cause. Pneumonia is an infection of the lungs with a defined infectious cause, not unknown. So the term that means unknown cause is idiopathic.