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 In addition to headaches, patients may experience ringing in the ears, vision disturbances, memory problems, brain fog, dizziness and nausea. Danielle Wilhour, The Conversation, 14 Aug. 2024 Scientists don’t know exactly what causes Long COVID, but many have hypothesized that viral material lingers in the body, potentially causing long-lasting symptoms including fatigue, the inability to exercise, brain fog, and more. Jamie Ducharme, TIME, 7 June 2024 Then there’s the other possible symptoms of POTS such as heart palpitations, anxious feelings, brain fog. Bruce Y. Lee, Forbes, 16 Aug. 2024 In addition to headaches, patients may experience ringing in the ears, vision disturbances, memory problems, brain fog, dizziness, and nausea. Danielle Wilhour, Discover Magazine, 15 Aug. 2024 See all Example Sentences for brain fog 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'brain fog.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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 7 Sep. 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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