differential diagnosis

noun

: the distinguishing of a disease or condition from others presenting with similar signs and symptoms

Examples of differential diagnosis in a Sentence

Recent Examples on the Web
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The physician’s assistant who saw Alejandro wrote in his records that his differential diagnosis included pulmonary embolism and acute coronary syndrome and made an appointment for him with Mansoor, the lawsuit says. Justin Muszynski, Hartford Courant, 19 Mar. 2026 Students would begin by first drafting their own differential diagnosis. Robert Pearl, Forbes.com, 7 July 2025 The differential diagnosis includes bacterial folliculitis, an infection of the hair follicles caused by Staphylococcus aureus.71 Milder cases of tinea barbae appear similar to the following diseases that cause comparable symptoms. Anna Giorgi, Verywell Health, 15 Aug. 2024 Later that night, they were told that their MRI was canceled as doctors would be doing a differential diagnosis instead. Georgia Slater, Peoplemag, 27 Apr. 2023 Accurate differential diagnosis is essential not just for getting patients care, but also for furthering medical understanding of a still-obscure condition. WIRED, 2 Sep. 2022 Supernumerary nipple should be considered in the differential diagnosis of a vulvar mass. Seriously Science, Discover Magazine, 5 May 2017

Word History

First Known Use

1829, in the meaning defined above

Time Traveler
The first known use of differential diagnosis was in 1829

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Cite this Entry

“Differential diagnosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/differential%20diagnosis. Accessed 31 Mar. 2026.

Medical Definition

differential diagnosis

noun
: the distinguishing of a disease or condition from others presenting similar symptoms

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