brain fog

Also brain-fog,

[breyn fog, fawg]

Phonetic (Standard)IPA

noun

a mental state marked by difficulty remembering, concentrating, or thinking clearly, often caused by exhaustion, stress, or illness: For new parents, fatigue and brain fog seem inevitable.
He had so much brain fog that a single thought felt impossible.
For new parents, fatigue and brain fog seem inevitable.
Research has found that long COVID can cause brain fog and memory loss.

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Word History and Origins

Origin of brain fog¹

First recorded in 1850–55; brain ( def. ) + fog ¹ ( def. )

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Example Sentences

Examples have not been reviewed.

Every few weeks I can feel a hint of brain fog creeping back in, but it’s nothing like before.

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I started calling it “brain fog,” though the term felt frustratingly vague, more of a symptom than a diagnosis.

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So: An article on the internet, like this one, cannot tell you that nicotine is a proven therapy for brain fog, or anything else.

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Hot flushes, brain fog, insomnia...

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That’s especially so because the described symptoms — chronic fatigue, brain fog, insomnia, and dizziness among them — are not uncommon and often arise from other causes.

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brain fingerprinting brainfood

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