Multiple Sclerosis Symptoms: 5 Signs To Watch Out For

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5 signs of Multiple Sclerosis that will creep up on you | Hitoshi Nishimura via Getty Images

By Connie Brichford, Everyday Health

It’s more important than ever to be aware of the warning signs of multiple sclerosis, a chronic and often disabling autoimmune disease. While more than 400,000 people in the United States and 2.1 million people worldwide have MS, someone gets newly diagnosed every hour, according to the National MS Society.

Do you know what symptoms to watch for? According to Tanuja Chitnis, MD, assistant professor of neurology and director of the Partners Pediatric MS Center at Massachusetts General Hospital for Children, early symptoms of MS can include blurred vision, loss of vision, and/or numbness or tingling that lasts for several days. Dr. Chitnis indicates that while any symptoms of multiple sclerosis — including problems with motor skills, bladder control, and coordination and balance — can manifest at any point in the course of the disease, she has noticed that blurred vision and numbness tend to be symptoms common to the initial diagnosis and earlier stages of MS.

Everyone has experienced the temporary pins-and-needles numbness that accompanies resting on your arm or leg in the wrong way, but this feeling tends to go away within a few minutes as blood flow returns to the area, Chitnis says. The key to determining whether a symptom might be due to multiple sclerosis, she says, is timing; MS symptoms develop over the course of several days, and can last for several days to a few weeks.

Multiple Sclerosis Symptoms
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Vision Loss
Eye issues are often the first sign of multiple sclerosis. Before he received his MS diagnosis, for example, Jeffrey Gingold noticed that his vision was beginning to rapidly decline in one eye. Gingold was 36 at the time, making such dramatic vision loss extremely unusual. He scheduled an appointment with his regular eye doctor, and remembers the ophthalmologist saying, "You either have MS or you have a brain tumor." An MRI confirmed that it was multiple sclerosis.

Balance
Balance and dizziness are also common initial signs of multiple sclerosis. Rick Sommers, a fit and athletic guy, was diagnosed with MS in 1994. "I was training for a marathon and my balance was off; I felt lightheaded," he remembers. "I went to a doctor who thought it was an inner ear infection." He adds wryly, "I was misdiagnosed." In fact, his balance issues were Sommers' first symptoms of MS.

Numbness/Tingling
After his initial balance difficulties, Sommers began to notice tingling and numbness in his right side, which motivated him to see a neurologist. The neurologist ordered an MRI (magnetic resonance imaging), and found lesions in Sommers' brain that indicated multiple sclerosis was what was causing his symptoms.

Heat Intolerance
Heat intolerance is another telltale sign of multiple sclerosis. If you feel dizzy, faint, or unusually uncomfortable in warm temperatures or when engaging in body-warming activities like soaking in a hot tub, exercising, or sunbathing, it could be a sign of multiple sclerosis. Heat intolerance also tends to make other symptoms of multiple sclerosis more pronounced.

Other MS Symptoms
MS symptoms are varied and numerous. In addition to those described above, common symptoms include fatigue, pain, bowel and urinary problems, sexual dysfunction, difficulty swallowing and speech problems, cognitive (thought process) issues, and depression — among others.

Some of these symptoms are common to many disorders, and Chitnis emphasizes the importance of timing in figuring out if the symptoms could be caused by MS. If you are experiencing any of the symptoms above, for a period of more than 24 hours, there is a chance that multiple sclerosis is the cause.

Of course, any symptom that interferes with your job performance, daily functioning, or quality of life is worth discussing with your doctor, whether or not you suspect it might be related to multiple sclerosis. For many diseases, the earlier they are caught, the more effective treatment will be. Multiple sclerosis is no exception. There are now treatments available that can effectively slow disease progression, and initiating them as early as possible is generally the best course you can take.