Brain fog describes cognitive dysfunction including memory problems, difficulty concentrating, and mental fatigue.
✦ AI summary
Based on these sources, "brain fog" (cognitive dysfunction/impairment) shows up as a recognized symptom across several chronic conditions, though the sources don't explain it as a single, unified phenomenon.
- In **Long COVID**, brain fog is listed alongside fatigue, pain, and dysautonomia as a core symptom, and researchers found that a related process called "central sensitization" (present in 81% of studied patients) was linked with greater symptom burden, reduced blood flow to the brain during posture changes, and higher inflammation markers, suggesting cerebral blood flow changes and neuroinflammation may play a role [3].
- In **Sjögren's Disease**, patients themselves identified "brain fog" as an important part of their disease experience in focus groups, grouped with fatigue, dryness, and autonomic symptoms as areas current research measures don't fully capture [10].
- In **sarcoidosis**, cognitive dysfunction is described as a patient-reported symptom (along with fatigue and dysautonomia) that significantly affects quality of life but isn't well captured by standard disease measurements, and it's suggested that care should better address these patient-reported issues [2].
- Looking across **post-infectious
This is an AI-generated summary of the sources below — not medical advice. Always talk to a doctor or pharmacist about your own situation.
Cholesterol crystal formation and embolism in the central nervous system and their potential role in Alzheimer's disease.
The brain and nervous tissues are very rich in cholesterol with local sterol biosynthesis being the primary source. The production of cholesterol in the brain may also lead to cholesterol crystal formation that in turn can cause inflammation which potentially can contribute to Alzheimer's disease. I…
Pragmatic approaches to improve the care of patients with sarcoidosis.
Sarcoidosis is associated with an increasing global burden, driven by rising prevalence, severe organ involvement, treatment-related morbidity, and substantial impairment in quality of life (QoL). Despite advances in diagnostics and therapeutics, important barriers continue to limit timely, equitabl…
dysautonomiasarcoidosissmall fiber neuropathybrain fog
Central sensitization in long COVID: Associations with autonomic symptom burden, cerebral hypoperfusion, and neuroinflammation.
The mechanisms driving the broad spectrum of Long COVID symptoms-such as fatigue, brain fog, pain, and dysautonomia-remain uncertain. This study investigated central sensitization (CS) as a potential contributor to symptom burden in patients with Long COVID. We aimed to examine its association with…
Exploring the neuroprotective potential of Tecomella undulata plant extract in dementia induced adult zebrafish through modulation of oxidative stress and inflammation biomarkers.
A gradual and complex neurological disease, dementia significantly impairs cognitive abilities. Oxidative stress and chronic inflammation are the two common factors behind this. In this study, the neuroprotective effects of a hydro-ethanolic extract of Tecomella undulate (TUHEE) were investigated ag…
Molecular and cellular mechanisms of lead-induced neurotoxicity: comparative insights from rodent and zebrafish models.
Lead is a persistent environmental heavy metal and a potent neurotoxin that continues to threaten global public health despite regulatory restrictions. Chronic and developmental exposure, particularly during early life, leads to persistent structural and functional disturbances in the central nervou…
Brain network alterations in autoimmune diseases: Current status and future prospects.
Autoimmune diseases are frequently associated with neurological and cognitive dysfunction. Advances in neuroimaging and graph theory-based connectomics have enabled investigation of large-scale brain network alterations across autoimmune conditions. This review synthesizes structural and functional…
Multi-omics profiling reveals gut microbiome signatures associated with cognitive decline in Alzheimer's disease.
Alzheimer's disease (AD) is increasingly being linked to gut microbial dysbiosis via the gut-brain axis. We applied integrated metagenomics and metabolomics to characterize gut microecology in 28 patients with AD and 33 controls. Metagenomic analysis revealed distinct microbial community structures,…