[Snoopy]

In the study, five primary diagnoses or syndromes were identified in two thirds of participants as the actual causes of symptoms misidentified as MS: migraine, either alone or in combination with other problems; fibromyalgia; an abnormal MRI with unexplained symptoms; a psychological condition; and neuromyelitis optica spectrum disorder (NMOSD) -- a disease similar to MS that affects the optic nerves and spinal cord.

According to the study findings, 72 percent of the misdiagnosed patients took medication to treat a disease they didn't have, some took these medications for many years, and 33 percent had remained misdiagnosed for a decade or longer before being evaluated by the physicians participating in the study who had informed them of an incorrect misdiagnosis. Four of the patients misdiagnosed with MS had participated in clinical trials for experimental MS therapies.

https://www.sciencedaily.com/release...0831163038.htm