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Brain Glitch: The Mystery Disorder Doctors Missed
8 May
Summary
- Functional Neurological Disorder is often missed by medical providers.
- FND symptoms can include tremors, dizziness, and weakness.
- New approaches treat FND as a neurologic and mental health condition.

Functional Neurological Disorder (FND) is a condition frequently overlooked by medical providers, yet it affects a significant number of people. Kyla Madonna Kenny's experience highlights the struggle of receiving a diagnosis for symptoms like tremors and dizziness, which were initially misattributed to anxiety. Dr. David Perez, a neurologist and psychiatrist, likens FND to a 'software crash' in a healthy brain, emphasizing that it is both a neurological and a mental health condition.
Historically, FND has been known by various terms, including "hysteria" and "conversion disorder." This has created a historical divide between neurology and psychiatry, leaving patients struggling to fit into traditional diagnostic categories. Modern understanding, influenced by researchers like Dr. Mark Hallett, recognizes that voluntary motor control can be disrupted in ways not visible through standard imaging, validating the patient's experience.
Treatment for FND involves a multidisciplinary approach, combining physical therapy, occupational therapy, and skills-based psychotherapy, such as cognitive behavioral therapy. Kyla's own journey has included these therapies, along with mindfulness and identifying symptom triggers. By finally being believed and understood, individuals with FND can begin their path to recovery, with Kyla sharing her experience through music.
As of May 8, 2026, FND continues to be a focus in medical research, aiming to improve diagnosis and care. The condition challenges the dualistic view of mind and body, promoting a more integrated approach to patient health. Understanding FND is crucial for accurate diagnosis and effective treatment strategies.