Cognitive Fog
A state of mental cloudiness, confusion, and reduced cognitive clarity, often described as thinking through cotton wool or fog. Cognitive fog affects memory, processing speed, and concentration across many conditions.
Quick answer
Cognitive fog (ICD-10: R41.3; ICD-11: MB21) is prominent in ME/CFS, post-COVID syndrome, and nutritional deficiency. Nutritional correction and sleep improvement have strong evidence. Pacing is essential in ME/CFS. Lion's mane and bacopa have emerging clinical evidence. Progressive or sudden onset requires urgent assessment.
Recognition
Do any of these feel familiar?
Difficulty thinking clearly or processing information at usual speed
Memory lapses for recent events or conversations
Difficulty finding words or articulating thoughts
Mental exhaustion after cognitive tasks
Feeling mentally slow or disconnected from one's surroundings
What is Cognitive Fog?
A state of mental cloudiness, confusion, and reduced cognitive clarity, often described as thinking through cotton wool or fog. Cognitive fog affects memory, processing speed, and concentration across many conditions.
Approaches Commonly Explored
Commonly explored for conditions related to Cognitive Fog, grouped by mechanism — select your subtype above to highlight the most relevant path.
How to use these approaches
Most people begin with Stabilise approaches, then progress toward Resolve and Sustain.
Nervous system regulation, brain function, and neural pathways.
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