Patient experiences and clinical cases relating to Functional Neurological Disorder.
Personal experiences of living with an FND diagnosis.
Maddie Aumann was diagnosed with FND before genetic testing identified a rare SCN9A disorder. Her mother, Christine Aumann, describes how the FND label continued to affect Maddie’s care even after that discovery, ultimately helping inspire Maddie’s Law.
Miranda’s health collapsed almost overnight, progressing from difficulty walking to seizures, psychosis, and rapid neurological decline. Despite abnormal findings and worsening symptoms, she was quickly labelled with Functional Neurological Disorder, and further testing was repeatedly refused. Her story raises serious concerns about missed conditions like Autoimmune encephalitis and the risks of diagnostic overshadowing blocking proper care.
Email from a 21-year-old medical student in Kazakhstan sharing their detailed experience with neurological symptoms diagnosed as FND, highlighting objective signs of an organic lesion, diagnostic history, and concerns about misdiagnosis.
For the past seven years, my wife’s health has steadily declined, which forced me into research mode - diving deep into various medical fields through countless hours of studying medical journals, textbooks, clinical resources, and literature, as we were passed from specialist to specialist.
Real clinical cases documented in published medical case reports.
A 2024 case report describes a 42-year-old woman diagnosed and treated for FND despite persistent facial, oral and cervical movements. After treatment failed, neurology diagnosed Meige syndrome. The authors explicitly describe the original FND diagnosis as a misdiagnosis.
A 2025 case report describes a 17-year-old with type 1 diabetes whose abnormal behaviour and movements were initially attributed to conversion disorder. Glucose readings of 36 and 24 mg/dL during attacks revealed severe hypoglycaemia, and the conversion diagnosis was withdrawn.
A 65-year-old woman with an abnormal gait, cognitive decline and psychiatric symptoms was diagnosed with conversion disorder after inconclusive neurological investigations. Years later, genetic testing confirmed Huntington’s disease—raising a difficult question: what positive evidence had established conversion disorder in the first place?
A 22-year-old woman entered rehabilitation with FND as her primary diagnosis while an underlying acute motor and sensory axonal neuropathy (AMSAN) remained unrecognised. EMG and nerve conduction studies later demonstrated extensive axonal damage, leading to IVIG treatment and improved rehabilitation progress. The authors explicitly describe the case as diagnostic overshadowing.
A 14-year-old boy was diagnosed with a functional movement disorder after presenting with suppressible involuntary movements and psychiatric comorbidity. Further investigation identified monogenic paroxysmal kinesigenic dyskinesia (PKD), while the authors noted that specific positive features supporting the original functional diagnosis had been absent.
A pediatric patient diagnosed with Functional Neurological Disorder was later found to have DYT-TOR1A dystonia and responded well to deep brain stimulation. The authors retained FND as a coexisting diagnosis, raising an important question: once a genetic disorder capable of producing the movements was identified, what evidence determined which symptoms remained functional?
A 52-year-old woman developed progressive leg stiffness, spasms and severe gait impairment that worsened with stress and fatigue. After multiple evaluations, she was diagnosed with conversion disorder. A year later, markedly elevated anti-GAD antibodies and characteristic EMG abnormalities supported stiff-person syndrome, with significant improvement following IVIG.
A woman with tremor, speech problems and slowed movements was diagnosed with conversion disorder after early neurological investigations were unrevealing. As her condition progressively deteriorated, genetic testing ultimately confirmed Gerstmann–Sträussler–Scheinker disease caused by a rare PRNP mutation.
A man whose variable, distractible and inconsistent neurological findings contributed to a diagnosis of conversion disorder continued to deteriorate for years. After his death, neuropathology and genetic testing confirmed Gerstmann-Sträussler-Scheinker syndrome, showing how genuine clinical observations can support the wrong diagnostic interpretation.
A 64-year-old woman was diagnosed with a functional neurological movement disorder after clinicians observed distractibility, variability and entrainment. Within weeks, worsening symptoms and newly abnormal EEG and MRI findings reopened the investigation, and a brain biopsy confirmed sporadic Creutzfeldt-Jakob disease.
A published case report documents a patient initially diagnosed with FND whose progressive neurological deterioration led to further investigation and an eventual diagnosis of progressive supranuclear palsy (PSP).
A 26-year-old postpartum woman presenting with headache and neurological symptoms was discharged with anxiety and possible conversion disorder. She returned the following morning unable to walk. MRI revealed a thalamic infarction caused by cerebral venous thrombosis. The case also raises a broader question: if later disease does not necessarily invalidate an FND diagnosis, how is FND misdiagnosis actually identified and counted?