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.