These symptoms might indicate MS years before a diagnosis.

Early Signs of Multiple Sclerosis Detected Decades Before Symptoms

Research suggests that indications of a malfunctioning immune system may show up more than ten years before the physical symptoms of multiple sclerosis (MS) become apparent.

A recent study points to poor mental health as one of the earliest signals for this pervasive disease, which affects approximately 2.8 million individuals worldwide.

Researchers from the University of British Columbia, led by epidemiologist Marta Ruiz-Algueró, examined the medical records of 2,038 MS patients in Canada, contrasting them with those of 10,182 patients who do not have the condition.

They found that those who later developed MS frequently presented with symptoms like fatigue, headaches, dizziness, anxiety, and depression, more so than the general population.

Interestingly, these warning signs emerged as early as 15 years prior to the onset of more recognizable symptoms. Additionally, the study noted an increase in consultations with neurologists and ophthalmologists about 8 to 9 years before their official diagnosis, which was followed by a rise in visits related to physical symptoms.

“We’re just beginning to grasp what these early symptoms are. Mental health issues seem to be among the first alerts,” says Ruiz-Algueró.

“These patterns imply that MS has a prolonged and intricate prodromal phase, where something is occurring beneath the surface that hasn’t yet fully manifested as MS.”

While symptoms of mental health concerns are common across the general population, researchers warn that the majority of those experiencing them will not necessarily go on to develop MS. Nonetheless, a deeper understanding of how these signs correlate to MS could help in identifying risk factors and enable earlier interventions.

“Recognizing MS can be tricky, since many initial signs—like fatigue, headache, pain, and mental health issues—are quite general and could easily be attributed to other conditions,” explains Helen Tremlett, another epidemiologist at the University of British Columbia.

In people with MS, the immune system mistakenly attacks the fatty protective layer of their nerves, known as the myelin sheath. This can lead to various complications, including pain, loss of sensation, and impairment in motor functions as the link between the body and brain weakens. Other common symptoms include fatigue, vision disruptions, and cognitive difficulties.

Though viral and bacterial infections have been linked to triggering MS, along with certain genetic predispositions, the exact cause behind the immune system’s breakdown remains elusive. While some therapies can mitigate relapses, there isn’t yet a cure to prevent the progression of the disease.

Previous studies have also detected a pattern of MS-specific antibodies in blood samples as early as five years prior to the onset of characteristic symptoms.

“Our findings significantly alter the perceived timeline for the emergence of these initial warning signs, potentially paving the way for earlier detection and intervention,” summarizes Tremlett.