ms vision problems

A Close Look at MS Symptoms

Multiple sclerosis (MS) is a disease with unpredictable symptoms that can vary in intensity. While some people experience fatigue and numbness, severe cases of MS can cause paralysis, vision loss, and diminished brain function.

MS affects an estimated 2.3 million people worldwide. Women are affected more than twice as often as men, according to the National MS Society. Family history is also a major risk factor.

What Is Multiple Sclerosis?

MS is a progressive, “immune-mediated” disorder. That means the system designed to keep your body healthy mistakenly attacks parts of your body that are vital to everyday function. The protective coverings of nerve cells are damaged, which leads to diminished function in the brain and spinal cord.

The cause of MS largely remains a mystery, even though the disease was discovered in 1868. Researchers know the nerve damage is caused by inflammation, but the cause of the inflammation is still unknown.

MS and Vision Problems

Visual problems are one of the most common symptoms of MS. Inflammation affects the optic nerve and disrupts central vision. This can cause blurry, double, or loss of vision.

You may not notice the vision problems immediately, as degeneration of clear vision can be slow. Pain when you look up or to one side also can accompany vision loss.

Tingling and Numbness

MS affects nerves in the brain and spinal cord (the body’s message center). This means it can send conflicting signals around the body. Sometimes, no signals are sent. This results in numbness.

Tingling sensations and numbness are one of the most common warning signs of MS. Common sites of numbness include the face, arms, legs, and fingers.

Pain and Spasms

Chronic pain and involuntary muscle spasms are also common with MS. One study, according to the National MS Society, showed that half of people with MS had chronic pain.

Muscle stiffness or spasms (spasticity) are also common. You might experience stiff muscles or joints as well as uncontrollable, painful jerking movements of the extremities. The legs are most often affected, but back pain is also common.

Fatigue and Weakness

Unexplained fatigue and weakness affect about 80 percent of people in the early stages of MS.

Chronic fatigue occurs when nerves deteriorate in the spinal column. Usually, the fatigue appears suddenly and lasts for weeks before improving. The weakness is most noticeable in the legs at first.

Balance Problems and Dizziness

Dizziness and problems with coordination and balance can decrease the mobility of someone with MS. Your doctor may refer to these as problems with your gait. People with MS often feel lightheaded, dizzy, or feel as if their surroundings are spinning (vertigo). This symptom often occurs when a person stands up.

Bladder, Bowel, and Sexual Dysfunction

A dysfunctional bladder is another symptom occurring in up to 80 percent of people with MS. This can include urinating frequently, strong urges to urinate, or inability to hold in urine.

Urinary-related symptoms are often manageable. Less often, people with MS experience constipation, diarrhea, or loss of bowel control.

Sexual arousal can also be a problem for people with MS because it begins in the central nervous system — where MS attacks.

Cognitive Problems

About half of people with MS will develop some kind of issue with their cognitive function. This can include:

  • memory problems
  • shortened attention span
  • language problems
  • difficulty staying organized

Depression and other emotional health problems are also common.

Emotional Health

Major depression is common among people with MS. The stresses of MS can also cause irritability, mood swings, and a condition called pseudobulbar affect. This involves bouts of uncontrollable crying and laughing.

Coping with MS symptoms, along with relationship or family issues, can make depression and other emotional disorders even more challenging.

Other Symptoms

Not everyone with MS will have the same symptoms. Different symptoms can manifest themselves during relapses or attacks. Along with the symptoms mentioned on the previous slides, MS can also cause:

  • hearing loss
  • seizures
  • uncontrollable shaking
  • breathing problems
  • slurred speech
  • trouble swallowing

Progression and Severity

MS often astounds doctors because of how much it can vary in both its severity and the ways that it affects people. Attacks can last a few weeks and then disappear. However, relapses can get progressively worse, more unpredictable, and come with different symptoms. Early detection may help prevent MS from progressing quickly.

Is MS Hereditary?

MS isn’t necessarily hereditary. However, you have a higher chance of developing the disease if you have a close relative with MS, according to the National MS Society.

The general population only has a tenth of a percent chance of developing MS. But the number jumps to 2.5 to 5 percent if you have a sibling or parent with MS.

Heredity isn’t the only factor in determining MS. An identical twin only has a 25 percent chance of developing MS if their twin has the disease. While genetics is certainly a risk factor, it’s not the only one.


A doctor — most likely a neurologist — will perform several tests to diagnose MS, including:

  • neurological exam: your doctor will check for impaired nerve function
  • eye exam: a series of tests to evaluate your vision and check for eye diseases
  • spinal tap (also called a lumbar puncture): a test involving a long needle that’s inserted into your spine to remove a sample of fluid circulating around your brain and spinal cord  

Doctors use these tests to look for damage to the central nervous system in two separate areas. They must also determine that at least one month has passed between the episodes that caused damage. These tests are also used to rule out other conditions.

Moving Forward

MS is a challenging disorder, but researchers have discovered many treatments that can slow its progression.

The best defense against MS is seeing your doctor immediately after you experience the first warning signs. This is especially important if someone in your immediate family has the disorder, as it’s one of the key risk factors for MS.

Don't hesitate. It could make all the difference.

You Asked, We Answered

  • Lately my legs have been going numb. I was diagnosed with MS in 2009 and this is new to me. How long does it last? I now have to use a cane. Any advice?- Jenn
  • These sound like new neurologic deficits and could represent an MS flare or attack. These should prompt urgent evaluation by your neurologist. Your provider may want to obtain new MRIs to see if there has been progression of your illness. It would also be important to exclude other causes of these symptoms like a urinary infection or other illness. If these symptoms are related to an MS attack, there are medications your neurologist can give you, like steroids, which may help to treat the symptoms of an attack. Further, if you are having an attack, your doctor may want to switch your immunosuppressive medication as this could be considered a breakthrough event.

    - The Healthline Medical Team