The Parva Journal
Brain fog
Mental clarity, processing speed and word finding — what people mean by fog, and how to describe it precisely enough to act on.
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6 articles
When words will not come
Word-finding difficulty is one of the most distressing cognitive symptoms and one of the most specific. What it is, what makes it more or less concerning, and how to describe it.
When brain fog needs a workup rather than reassurance
Most fog is not sinister. Some features change that — and knowing which ones means neither sitting on something nor being frightened by ordinary forgetfulness.
What people actually mean by brain fog
"Brain fog" is not a diagnosis and covers at least five distinct experiences. Separating them is the first step to finding out what is causing yours.
How to describe brain fog so a clinician can work with it
The gap between "I feel foggy" and a usable clinical description is about four sentences wide. Here is what goes in them.
The unglamorous causes of brain fog
Before anything exotic: sleep, medication, thyroid, iron, B12, alcohol, mood, and the aftermath of infection. Most fog has a mundane contributor, and mundane contributors are the treatable ones.
Brain fog after an illness
Cognitive symptoms that persist after an infection are real, documented, and managed — not imagined. What the pattern looks like, why pushing through backfires, and what to raise.