Understanding nervous system involvement in invisible illness — from brain fog and neuropathy to neuroinflammation and cognitive decline.
78%
Report Brain Fog
45%
Have Neuropathy
60%
Cognitive Decline
Key
Neuroinflammation Key
Severity of cognitive domains affected by condition (0-100 scale). Assessment tools include Montreal Cognitive Assessment (MoCA) and Repeatable Battery for Assessment of Neuropsychological Status (RBANS).
Working Memory Deficits
Processing Speed Reduction
Word-Finding Difficulty
Concentration Loss
Assessment Reference: MoCA (Montreal Cognitive Assessment) screens for mild cognitive impairment (cutoff ≤25/30). RBANS (Repeatable Battery for Assessment of Neuropsychological Status) provides domain-specific scoring across immediate memory, visuospatial, language, attention, and delayed memory.
Types of neuropathy (small fiber, large fiber, autonomic) and condition-specific neurological symptoms.
Key biological pathways driving neurological damage in invisible illness.
Resident immune cells of the CNS become chronically activated, releasing pro-inflammatory cytokines (TNF-alpha, IL-1beta, IL-6) that damage neurons and sustain neuroinflammation.
Systemic immune dysregulation leads to elevated cytokines crossing the blood-brain barrier, driving neurological symptoms including fatigue, pain amplification, and cognitive dysfunction.
Inflammatory mediators compromise BBB tight junctions, allowing peripheral immune cells and neurotoxic substances to infiltrate the CNS parenchyma.
Autoantibodies targeting neuronal surface receptors (NMDA, GABA-B, CASPR2) or intracellular antigens cause synaptic dysfunction and neuronal injury.
Pathogen-derived peptides structurally resemble self-antigens, triggering cross-reactive immune responses that attack myelin sheaths or neuronal proteins.
Percentage of patients reporting each neurological symptom, grouped by condition.
Neurological assessments used to evaluate nervous system involvement.
| Test | Purpose | Availability |
|---|---|---|
| MRI Brain/Spine | Detect white matter lesions, demyelination, structural changes | Standard |
| Nerve Conduction Studies (NCS/EMG) | Evaluate large fiber neuropathy, motor/sensory nerve function | Standard |
| Skin Punch Biopsy | Quantify intraepidermal nerve fiber density for small fiber neuropathy | Specialized |
| Tilt Table Test | Diagnose POTS and orthostatic intolerance, measure heart rate/BP responses | Standard |
| QSART (Quantitative Sudomotor Axon Reflex Test) | Assess autonomic small fiber function via sweat response | Specialized |
| Lumbar Puncture | Analyze CSF for inflammatory markers, oligoclonal bands, infection | Standard |
| PET Scan (Research) | Detect neuroinflammation via TSPO ligand binding to activated microglia | Research Only |
Pharmacological, immunological, and rehabilitative interventions for neurological symptoms.
1.5-4.5mg nightly; modulates microglial activation and endorphin levels. Evidence in ME/CFS, fibromyalgia, and Long COVID neuroinflammation.
Pooled immunoglobulins that modulate autoimmune responses. Used for autoantibody-mediated neuropathies and small fiber neuropathy.
Dynamic Neural Retraining System and Gupta Programme target limbic system hyperactivation. Aim to interrupt maladaptive neural pathways.
Calcium channel alpha-2-delta ligands that reduce neuropathic pain signaling. First-line for small fiber neuropathy and fibromyalgia pain.
SNRI that modulates descending pain inhibition pathways. FDA-approved for fibromyalgia and diabetic neuropathy.
Structured programs targeting attention, memory, and executive function through compensatory strategies and graded cognitive exercises.
Evidence-based approaches to managing and improving cognitive function.
Structured digital cognitive exercises (e.g., Lumosity, BrainHQ) targeting processing speed, attention, and working memory with adaptive difficulty.
Break cognitive tasks into smaller intervals with scheduled rest periods. Align demanding tasks with peak energy windows identified through activity logging.
External memory aids (calendars, lists, alarms), environmental modifications (reduced distractions), and systematic organizational systems.
Individualized interventions addressing daily living activities, workplace accommodations, and energy management through activity analysis.