Skip to main content
VIDEO CENTER

Multiple Sclerosis

Today, there are many medication options to treat MS. If one medication doesn’t work or causes severe side effects, there’s likely another option that could be a better fit.

What Age Range Is Multiple Sclerosis Usually Diagnosed?

In this video, neurologist Michelle Fabian, MD, explains what age most patients with multiple sclerosis usually learn their diagnosis.

Mandy Armitage, MD profile image

Reviewed by Mandy Armitage, MD

Updated on April 7, 2025

We tend to associate most chronic diseases (think: diabetes, types of heart disease, stroke, osteoporosis) with middle age or even later in life, but the neurological condition multiple sclerosis follows a different pattern.

What is multiple sclerosis?

MS is an autoimmune disease that attacks the central nervous system, which makes it difficult to send messages between the brain and spinal cord. This leads to symptoms such as muscle weakness, tingling, and loss of balance. (Learn more symptoms of multiple sclerosis here.)

What age is multiple sclerosis usually diagnosed?

While these MS symptoms can make everyday tasks more challenging (walking, say, or using your hands for things like texting or cooking), it’s not related to the aging process. In fact, the average age range of diagnosis with MS is between 20 and 40.

No matter what age, a diagnosis of MS tends to take new patients by surprise. “People are healthy, active, [and] they’re not expecting to get a chronic diagnosis,” says Michelle Fabian, MD, a Neurologist at The Mount Sinai Hospital in New York City.

What causes MS?

These young and otherwise-healthy patients with MS tend to want answers on what caused their MS, but the answer is not completely clear. Scientists suspect it’s a mix of different factors. Here are some possible triggers, according to Dr. Fabian.

  • Genetics

  • Environment, such as diet, pollution, smoking, or other forms of toxins

  • Weather or climate

  • Prior exposure to infections

While a diagnosis of MS in your 20-somethings can be shocking and upsetting, you have good reason to remain optimistic. Thanks to advancement in treatment for MS, your life may not alter much compared to before your diagnosis. Learn more about how new medication and therapy have changed the outlook for MS patients.

References

National Multiple Sclerosis Society. (n.d.). Definition of multiple sclerosis.

National Multiple Sclerosis Society (n.d.). Relapsing-remitting MS (RMMS).

GoodRx Health has strict sourcing policies and relies on primary sources such as medical organizations, governmental agencies, academic institutions, and peer-reviewed scientific journals. Learn more about how we ensure our content is accurate, thorough, and unbiased by reading our editorial guidelines.

This information is for informational purposes only and is not meant to be a substitute for professional medical advice, diagnosis or treatment. GoodRx is not offering advice, recommending or endorsing any specific prescription drug, pharmacy or other information on the site. GoodRx provides no warranty for any information. Please seek medical advice before starting, changing or terminating any medical treatment.