A list of possible diseases that could explain the patient's signs is called?

• A. TDx
• B. Dx
• C. DDx
• D. P

Answer: (C)

A differential diagnosis is the list of possible diseases or conditions that could explain the patient’s signs. This approach helps you consider multiple plausible causes, guide which tests to run, and prioritize them to rule things in or out. The final diagnosis is made after collecting test results and seeing how the patient responds, which narrows the list to the single condition that fits best. The term for that list is DDx. The other terms don’t describe a list of possible causes: a diagnosis is the actual conclusion, and the other options aren’t standard terms for a differential list.