Positives

• A patient case account at the Carroll Institute described improvements in post-COVID brain fog after a multi-week functional neurology protocol that combined vestibular work with cognitive challenge The Carroll Institute.
  
  

Negatives

• One patient explicitly warned that many functional-medicine and functional-neurology providers do not take insurance, leaving patients paying out of pocket for evaluations that range from a $475 ninety-minute initial visit at one integrative clinic to several hundred dollars per cytokine test Mayo Clinic Connect.
• Framing Long COVID through a functional-neurologic-disorder lens has led to confusion and inappropriate diagnostic and therapeutic pathways, since the underlying drivers (viral persistence, immune dysregulation, microvascular injury, neuroinflammation) are not addressed by functional-neurology rehab programs PMC.

Hurdles & Side Effects

• Intensive functional-neurology programs are typically 1-3 weeks of daily sessions and cost $5,000-$15,000 out of pocket (rarely covered by insurance for Long COVID); specialists recommend asking for outcome data and patient references before committing Carolina Functional Neurology Center.
  
  
• PEM-prone patients can crash from overstimulation during intensive vestibular and cognitive work; clinics that pace appropriately and modify based on heart-rate variability are safer than fixed-protocol programs TB Functional Neurology.