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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
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)
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