misdiagnose

verb

mis·​di·​ag·​nose ˌmis-ˈdī-ig-ˌnōs How to pronounce misdiagnose (audio)
-ˌnōz
ˌdī-ig-ˈnōs
-ˈnōz
-əg-
misdiagnosed; misdiagnosing
Synonyms of misdiagnosenext

transitive verb

: to diagnose (someone or something) incorrectly
… babesiosis is often missed or misdiagnosed as malaria or flu.Linda Marsa
The researchers added that children with this disease are often misdiagnosed and thus inappropriately treated …Jane E. Brody

Examples of misdiagnose in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
So workers who do seek medical help often get misdiagnosed. Nell Greenfieldboyce, NPR, 18 May 2026 Batten was informed that he was misdiagnosed and didn't have a brain tumor. Vanessa Etienne, PEOPLE, 15 May 2026 The stigma tied to conditions framed primarily around reproduction—especially those that are often misdiagnosed or undertreated—can also affect a patient's mental health over time. Abby Norman, Verywell Health, 14 May 2026 Far too often, symptoms such as fatigue, swelling, shortness of breath, and nerve pain are misdiagnosed or dismissed. Letters To The Editor, The Orlando Sentinel, 24 Apr. 2026 See All Example Sentences for misdiagnose

Word History

First Known Use

1883, in the meaning defined above

Time Traveler
The first known use of misdiagnose was in 1883

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Cite this Entry

“Misdiagnose.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/misdiagnose. Accessed 23 May. 2026.

Medical Definition

misdiagnose

transitive verb
mis·​di·​ag·​nose (ˈ)mis-ˈdī-ig-ˌnōs, -ˌnōz How to pronounce misdiagnose (audio)
misdiagnosed; misdiagnosing
: to diagnose incorrectly

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