misdiagnose

verb

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

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.
Black patients are already less likely to be offered pain medication, more likely to be misdiagnosed, and more likely to die from preventable conditions. Joel Bervell, Time, 14 Nov. 2025 Representatives for Williams announced last year that she had been diagnosed with frontotemporal dementia in 2023, although the former Wendy Williams Show host has publicly shared her belief that she was misdiagnosed. Jennifer Zhan, Vulture, 12 Nov. 2025 At the medical center, a physician dismissed the symptoms as a reaction to the steroid medication she had been prescribed, misdiagnosing her with gynecomastia, a condition typically seen in men who use anabolic steroids, Sutherland’s lawyers said in a report. Vanessa Etienne, PEOPLE, 3 Nov. 2025 October marks Breast Cancer Awareness Month, and experts say now is the time to raise public attention for a disease that is difficult to detect, underrepresented in research and often either misdiagnosed or found late. Melissa Fleur Afshar, MSNBC Newsweek, 30 Oct. 2025 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 21 Nov. 2025.

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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