brain fog

noun

: a usually temporary state of diminished mental capacity marked by inability to concentrate or to think or reason clearly

Examples of brain fog 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.
Back pain isn’t the only health condition that plagued Mangione — the Reddit account included posts about brain fog and Lyme disease — but spondylolisthesis appears to have been the most taxing. Karen Kaplan, Los Angeles Times, 11 Dec. 2024 Again, while every woman’s experience is different, some very common symptoms include difficulty focusing or concentrating due to lack of sleep, interruptions from hot flashes, and brain fog, says Dr. Gunter. Jess Cording, Forbes, 9 Dec. 2024 The condition known as long Covid or post-Covid syndrome (PCS) can cause extreme tiredness, shortness of breath, brain fog, dizziness, heart palpitations and muscle aches lasting for 12 weeks or more, according to the Nice guidelines. The Week Uk, theweek, 8 Oct. 2024 Around 22% of long Covid patients are unemployed and unable to work due to chronic fatigue syndrome or myalgic encephalomyelitis and brain fog. Anuradha Varanasi, Forbes, 6 Nov. 2024 See all Example Sentences for brain fog 

Word History

First Known Use

1853, in the meaning defined above

Time Traveler
The first known use of brain fog was in 1853

Dictionary Entries Near brain fog

Cite this Entry

“Brain fog.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/brain%20fog. Accessed 21 Dec. 2024.

Medical Definition

brain fog

noun
: a usually temporary state of diminished mental capacity marked by inability to concentrate or to think or reason clearly
This brain fog can be a result of being overly stressed, tired, carrying extra weight, consuming too many calories or consistently consuming a diet poor in nutrients.Kylie Helgens, The Gazette (Cedar Rapids, Iowa)
Last Updated: - Updated example sentences
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