A Reddit user reports spending four years diagnosed with FND before receiving a Parkinson's disease diagnosis following a DaTscan. They say appropriate medication improved their condition, raising questions about the original diagnosis and the consequences of delayed investigation.

A Reddit user reports spending two years diagnosed with FND and anxiety before investigations reportedly identified autoimmune and genetic neurological conditions. Their experience raises questions about overlapping symptoms, diagnostic closure, and why complex presentations may be interpreted as functional.

A patient diagnosed with FND reports that a second opinion revealed autoimmune basal ganglia encephalitis. Their account raises questions about incomplete investigations, overlooked neurological findings and whether an unexplained illness was prematurely labelled functional.

A Reddit user documented severe neurological symptoms, an FND diagnosis and inpatient rehabilitation before further investigation reportedly revealed neurosarcoidosis. The patient later said their neurosurgeon found that the original hospital MRI already contained findings relevant to the eventual diagnosis.

A Reddit user describes rapidly progressive neurological and autonomic symptoms that were diagnosed as FND despite their concerns that something else was wrong. Six months after publicly questioning the diagnosis and specifically raising MSA as a possibility, they updated their story to report that further investigation had resulted in a diagnosis of multiple system atrophy (MSA), by which point they were completely bedridden.

A Reddit user documents a two-year journey in which progressive neurological symptoms were attributed to FND before they later reported receiving an ALS diagnosis, followed by the discovery of metastatic bladder cancer.