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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
Managing Brain Fog The four Ps are helpful when managing brain fog as well.
—Heather Jones, Verywell Health, 11 Sep. 2024
Catch up quick: Vyvanse, made by Takeda, is not only used for ADHD but prescribed off-label to treat patients with long COVID suffering from brain fog, fatigue and cognitive impairment.
—Tina Reed, Axios, 5 Sep. 2024
Symptoms vary and can include fatigue, difficulty breathing, headaches, brain fog, joint and muscle pain and continued loss of taste and smell, according to the Centers for Disease Control and Prevention (CDC).
—Mary Kekatos, ABC News, 13 Aug. 2024
Iwasaki and her group studied Long Covid patients with significant neurological symptoms, including brain fog, headache, memory loss, and dizziness.
—Byjennifer Couzin-Frankel, science.org, 21 June 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 1 Oct. 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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