Brain Fog Treatment in Marylebone, London
Brain fog is a description of experience, not a diagnosis. The first useful step is to find out whether yours shows up in numbers, and what is producing it. That is what the assessment is for.
Overview
Brain fog is a description, not a diagnosis
Nobody is diagnosed with brain fog. It is the word people reach for when processing feels slower than it should: words that will not come, a paragraph read three times, the thread lost mid-sentence. Useful as a description. Useless as a target.
So we measure it. A NayaScore assessment tests twelve cognitive domains, reported as percentiles against people of your age and sex, alongside grip strength and continuous heart rate variability from a wearable ring. Two outcomes are both informative. Either your attention and processing speed sit below where you would expect, and now you have a number to work against. Or they do not, and the fog is coming from somewhere the tests are not looking.
NayaScore is a measurement tool rather than a diagnostic test, and results are interpreted alongside clinical judgement. It is not a substitute for the medical work-up.
What has to be ruled out first. Thyroid disease, iron deficiency, low B12, sleep apnoea, perimenopause, depression and the after-effects of a viral illness all produce this exact complaint, and several are found with a blood test. Some medications do it too, including antihistamines and some antidepressants. Your GP should run that work-up. If you have not had it, have it, because there is no sense treating a circuit when the answer is ferritin.
Where the picture is post-viral, be aware that the evidence for stimulation in fatigue and cognition is earlier and smaller than the evidence in depression. Your clinician will tell you which category you are in.
Why it happens
What sits underneath brain fog
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Short or fragmented sleep, including undiagnosed sleep apnoea
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The after-effects of a viral illness, including ME/CFS and Long COVID, where NICE guideline NG206 sets out UK management for ME/CFS
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Fluctuating oestradiol in perimenopause, acting on the prefrontal cortex and hippocampus
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Thyroid disease, iron deficiency or low vitamin B12, all of which show up on blood tests
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Depression and anxiety, which frequently present as cognitive symptoms before mood is mentioned
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Medication side effects, including antihistamines, some antidepressants and opioids
Treatment approach
How we work on brain fog in Marylebone
NayaScore assessment
On enquiryThe point of the assessment is to convert a description into a measurement. Twelve cognitive domains as percentiles for your age and sex, plus grip strength and continuous heart rate variability. Whether your scores come back low or normal, you know more than you did. It is a measurement tool rather than a diagnostic test, and results are read alongside clinical judgement.
See treatment detail →Progress tracking
On enquiryFog fluctuates, which is why a single bad week or a single good one tells you very little. Repeating the identical battery across weeks separates a real trend from normal variation, and it is the only honest way to say whether anything has changed.
See treatment detail →Optimise programme
On enquiryIf your medical work-up is clear and your scores sit at or above baseline, Optimise is the right pathway: the target is measurable gain in named domains rather than treatment of a condition. Session count and reassessment points are fixed before you start.
See treatment detail →Restore programme
From £350 a sessionIf the assessment shows you sitting below your own baseline with a diagnosed condition underneath the fog, Restore is the correct pathway instead. Which of the two you belong in is a clinical decision made after the baseline, not a package you choose from a price list.
See treatment detail →Precision rTMS
From £350 a sessionStimulation targets the prefrontal circuits handling attention and working memory, at a dose set from your own motor threshold. The evidence base in cognition and fatigue is earlier and smaller than in depression, and your clinician will place your own case in the right category at the free consultation.
See treatment detail →Integrated therapy
On enquiryWhere the fog turns out to be a cognitive presentation of depression, anxiety or sustained stress, psychological work addresses the driver rather than the symptom. That is a common finding here and it is not a lesser answer.
See treatment detail →FAQ
Brain fog questions
Is brain fog a real medical condition?
It is a real experience but not a diagnosis. No doctor can diagnose brain fog, because the term describes slowed processing without saying what is causing it. That is the point of measuring: the assessment shows whether your attention and processing speed are genuinely below par, and how far.
What should I do before booking?
See your GP and get the basic work-up. Thyroid function, full blood count, ferritin and B12 all produce this complaint and all are found on a blood test. Sleep apnoea is worth asking about too. Come to us with those results in hand and the assessment becomes far more useful.
Can rTMS treat brain fog?
It depends entirely on what is producing the fog, which is why nobody should promise you a yes. The evidence is strongest in depression, and earlier and smaller in fatigue and cognition. Your clinician will tell you at the free consultation which category your own presentation falls into.
My fog started after a virus. Does that change things?
It changes the evidence you are working from. Post-viral fatigue and cognitive symptoms have a smaller trial base than depression, and we will not quote you figures from studies in other populations. NICE guideline NG206 covers how ME/CFS should be diagnosed and managed in the UK, and that pathway still applies.
What if my cognitive scores come back normal?
That is a genuinely useful result, not a wasted appointment. It means the fog is not showing up as measurable cognitive impairment, which redirects attention to sleep, mood, hormones or a medical cause. We would tell you that plainly and not sell you a programme you do not need.
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Naya • 1 Orchard Street, London W1H 6HJ
BookAppointments typically available within 1–2 weeks