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misdiagnose

American  
[mis-dahy-uhg-nohs, -nohz, mis-dahy-uhg-nohs, -nohz] / mɪsˈdaɪ əgˌnoʊs, -ˌnoʊz, ˌmɪs daɪ əgˈnoʊs, -ˈnoʊz /

verb (used without object)

misdiagnosed, misdiagnosing
  1. to make an incorrect diagnosis.


verb (used with object)

misdiagnosed, misdiagnosing
  1. to diagnose erroneously.

    to misdiagnose the nation's ills.

misdiagnose British  
/ ˌmɪsˈdaɪəɡˌnəʊz /

verb

  1. to diagnose (an illness or problem) wrongly or mistakenly

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of misdiagnose

First recorded in 1925–30; mis- 1 + diagnose

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

"It's a rare illness, it's hard to diagnose and easier to misdiagnose," he adds.

From BBC May 6, 2026

“We have to be careful not to misdiagnose economic weakness,” Macklem said.

From The Wall Street Journal Feb. 5, 2026

There are situations in which doctors can misdiagnose people with TB.

From Los Angeles Times Mar. 25, 2024

Doctors in emergency rooms misdiagnose conditions like stroke and sepsis in tens of thousands of patients each year, according to a new study.

From New York Times Dec. 21, 2022

This difference may help explain why clinicians sometimes misdiagnose women who have bipolar disorder with depression.

From Seattle Times Sep. 16, 2022

Ellie explores why it takes so long to be diagnosed with 'endo', and meets a woman who had a perfectly healthy appendix removed because she was misdiagnosed.

From BBC May 27, 2026

Some estimates suggest that a significant share of patients remain undiagnosed or misdiagnosed for years, often cycling through providers before receiving a clear explanation for their symptoms.

From Salon May 16, 2026

Rosie's cancer was misdiagnosed for nearly a year, Conyngham said on the phone during one of the long daily walks the pair have resumed.

From Barron's Mar. 30, 2026

“We still hear stories about people who are saying, you know, my physician dismissed it or misdiagnosed it, or told me to just go home and wait,” Ferrer said.

From Los Angeles Times Mar. 14, 2026

On top of that, Cofield said, Henrietta’s doctors had misdiagnosed her cancer and might have killed her with an overdose of radiation.

From "The Immortal Life of Henrietta Lacks" by Rebecca Skloot

This often results in doctors misdiagnosing the disease or catching it much later in its progression, when tremors may already be apparent.

From Washington Post Sep. 2, 2022

Williams’ departure came after an ugly dispute with the team’s medical staff and former president Bruce Allen in which he blamed the team for misdiagnosing a cancerous growth on his head.

From Washington Times Sep. 1, 2022

This included misdiagnosing a student with a potentially life-threatening case of appendicitis and failing to notice a stress fracture in another student, prolonging the recovery.

From Seattle Times Jul. 13, 2020

Caroline Schnakers was a neuropsychologist in Belgium when studies began appearing that showed doctors were misdiagnosing consciousness: People who were conscious were being diagnosed as being in a vegetative state.

From Los Angeles Times Aug. 22, 2019

In his 2015 autobiography Purple Revolution, he laid bare both his anger with the NHS for initially misdiagnosing his condition but also his gratitude for the ultimately successful treatment, which he says saved his life.

From BBC May 27, 2019

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