undiagnosed

adjective

un·​di·​ag·​nosed ˌən-ˌdī-ig-ˈnōst 

-əg-,

-zd

: not diagnosed : not identified through diagnosis

an undiagnosed illness

… the symptoms of the syndrome may be subtle and thus may remain undiagnosed.

—Dwight R. Robinson

a condition that often goes undiagnosed

Examples of undiagnosed in a Sentence

Recent Examples on the Web

Pertussis Case Rates The total of more than 16,000 cases of pertussis reported to the CDC so far this year is probably lower than the number of infections that are really out there because minor ones are often undiagnosed. —Meghan Bartels, Scientific American, 9 Oct. 2024

While most people can meet their iron needs through a balanced diet, the study's findings show that many people are likely going undiagnosed. —Lauryn Higgins, Health, 4 Oct. 2024

This makes the early diagnosis of encephalitis difficult, and sometimes cases can go undiagnosed. —Francisco J. Rivera Rosario, Health, 26 Sep. 2024

But for some who have conditions that are resistant to treatment or are undiagnosed, the risk of complications such as stroke, heart failure, or cardiac arrest is high. —Carisa Brewster, Verywell Health, 12 Sep. 2024

Word History

First Known Use

1864, in the meaning defined above

Medical Definition

undiagnosed

adjective

un·​di·​ag·​nosed -ˈnōst 

: not diagnosed : eluding diagnosis

undiagnosed disease