The findings challenge long-held assumptions about when the disease truly begins, offering the most comprehensive picture to date of how patients engage with a range of healthcare providers in the years leading up to a diagnosis as they search for answers to ill-defined medical challenges.<\/p>\n
\u201cMS can be difficult to recognize as many of the earliest signs\u2014like fatigue, headache, pain and mental health concerns\u2014can be quite general and easily mistaken for other conditions,\u201d said senior author Dr. Helen Tremlett, professor of neurology at UBC\u2019s faculty of medicine and investigator at the Djavad Mowafaghian Centre for Brain Health. \u201cOur findings dramatically shift the timeline for when these early warning signs are thought to begin, potentially opening the door to opportunities for earlier detection and intervention.\u201d<\/p>\n
The study used linked clinical and administrative provincial health data to track physician visits in the 25 years leading up to the onset of a patient\u2019s MS symptoms, as determined by a neurologist through detailed medical history and clinical assessments.<\/p>\n
It is the first study to examine healthcare usage this far back in a patient\u2019s clinical history. Most previous studies only examined trends in the five to 10 years leading up to a patient\u2019s first demyelinating event (such as vision problems) using administrative data. This is a much later benchmark compared to the neurologist-determined date of symptom onset.<\/p>\n
The findings revealed that, when compared to the general population, people with MS had a steady build-up of healthcare engagement over 15 years with different types of doctor visits increasing at distinct points in time:<\/p>\n
\u2022 15 years before symptom onset: Visits to general practice physicians increased, as did visits to any physician for symptoms like fatigue, pain, dizziness and mental health conditions including anxiety and depression.
\u2022 12 years before: Visits to a psychiatrist increased.
\u2022 Eight to nine years before: Visits to neurologists and ophthalmologists increased, which could relate to issues like blurry vision or eye pain.
\u2022 Three to five years before: Emergency medicine and radiology visits increased.
\u2022 One year before: Physician visits across multiple specialties peaked, including neurology, emergency medicine and radiology.<\/p>\n
\u201cThese patterns suggest that MS has a long and complex prodromal phase\u2014where something is happening beneath the surface but hasn\u2019t yet declared itself as MS,\u201d said Dr. Marta Ruiz-Alguer\u00f3, a postdoctoral fellow at UBC and the study\u2019s first author. \u201cWe\u2019re only now starting to understand what these early warning signs are, with mental health-related issues appearing to be among the earliest indicators.\u201d<\/p>\n
The study builds on previous work<\/a> by Dr. Tremlett and her team to characterize the early stages of MS, or prodromal phase, when subtle symptoms appear before the hallmark signs become recognizable. Prodromal periods are well established in other neurological disorders, like Parkinson\u2019s disease, where mood changes, sleep disturbances and constipation often arise years before the more familiar motor symptoms like tremors and stiffness.<\/p>\n While the researchers caution that the vast majority of people who experience general symptoms will not go on to develop MS, they say recognizing and characterizing the MS prodrome could one day help accelerate diagnosis and improve outcomes for patients.<\/p>\n \u201cBy identifying these earlier red flags, we may eventually be able to intervene sooner\u2014whether that\u2019s through monitoring, support or preventive strategies,\u201d said Dr. Tremlett. \u201cIt opens new avenues for research into early biomarkers, lifestyle factors and other potential triggers that may be at play during this previously overlooked phase of the disease.\u201d<\/p>\n Interview language(s): English<\/p>\n Featured Researcher<\/p>\n![\"\"](\"https:\/\/www.newsbeep.com\/ca\/wp-content\/uploads\/2025\/08\/cropped-MEDICINE-Helen-Tremlett-1-300x300.jpg\")
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