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
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Hot flashes, night sweats, mood swings, brain fog—this didn’t sound like a party.
—
Nell Beram, Allure, 5 Feb. 2025
The common symptoms of POTS include light-headedness, fainting, brain fog, fatigue, headache, blurred vision, tremors, and nausea.
—Daniel R. Depetris, Newsweek, 10 Jan. 2025
Specific health effects People exposed to air pollution can have a number of different symptoms, including burning eyes, sore throat, cough, sinus problems, fatigue, headaches, chest pain, shortness of breath and brain fog, according to Perlmutter.
—Melissa Rudy, Fox News, 13 Jan. 2025
In adults, the most common long Covid symptoms include fatigue and brain fog, but for children the condition can look different.
—David Cox, WIRED, 27 Sep. 2024
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Nell Beram, Allure, 5 Feb. 2025
The common symptoms of POTS include light-headedness, fainting, brain fog, fatigue, headache, blurred vision, tremors, and nausea.
—Daniel R. Depetris, Newsweek, 10 Jan. 2025
Specific health effects People exposed to air pollution can have a number of different symptoms, including burning eyes, sore throat, cough, sinus problems, fatigue, headaches, chest pain, shortness of breath and brain fog, according to Perlmutter.
—Melissa Rudy, Fox News, 13 Jan. 2025
In adults, the most common long Covid symptoms include fatigue and brain fog, but for children the condition can look different.
—David Cox, WIRED, 27 Sep. 2024
See all Example Sentences for brain fog
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 11 Feb. 2025.
Copy CitationMedical 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)
Kylie Helgens, The Gazette (Cedar Rapids, Iowa)Love words? Need even more definitions?
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