If you have MS and it's early in the disease course, you might not have tested positive in all the MS tests. In fact, you might not have tested positive in any of the tests.
Diagnosing MS is complicated because no single test can positively diagnose it. Other possible causes of your symptoms may need to be ruled out first. It may also not be possible to confirm a diagnosis if you have had only 1 attack of MS-like symptoms.
So the doctor will consider other info, including your symptoms, along with the scan results or the enhancement of lesions before they make a diagnosis. Also, an MRI result that says things are normal doesn't rule out MS. You could be one of a small number of people who have lesions in places the scan can't show.
Although MRI is a very useful diagnostic tool, a normal MRI of the brain does not rule out the possibility of MS. About 5 percent of people who are confirmed to have MS do not initially have brain lesions evidenced by MRI.
While there is no definitive blood test for MS, blood tests can rule out other conditions that cause symptoms similar to those of MS, including lupus erythematosis, Sjogren's, vitamin and mineral deficiencies, some infections, and rare hereditary diseases.
There are no specific tests for MS . Instead, a diagnosis of multiple sclerosis often relies on ruling out other conditions that might produce similar signs and symptoms, known as a differential diagnosis. Your doctor is likely to start with a thorough medical history and examination.
Magnetic resonance imaging (MRI)
It's very accurate and can pinpoint the exact location and size of any inflammation, damage or scarring (lesions). MRI scans confirm a diagnosis in over 90 per cent of people with MS.
People should consider the diagnosis of MS if they have one or more of these symptoms: vision loss in one or both eyes. acute paralysis in the legs or along one side of the body. acute numbness and tingling in a limb.
RELATED: Advances in Diagnosing Multiple Sclerosis
However, you cannot 100 percent confirm or rule out MS based on a spinal tap, explains Dr. Giesser. “Even if the spinal tap is negative, about 10 percent of people who have MS have normal spinal fluid.
Some people are told they have benign MS. The term benign MS is sometimes used to describe a version of relapsing remitting MS with very mild or no attacks separated by long periods with no symptoms. 'Benign' means 'something doesn't cause any harm'.
How long can MS go undiagnosed? MS is usually diagnosed between the ages of 20 and 50, but it can go undetected for years. In fact, a 2021 study suggested that many people with MS experience disease symptoms several years before being officially diagnosed with the disease.
MRI plays a vital role in how we diagnose and monitor MS. In fact, over 90% of people have their MS diagnosis confirmed by MRI.
A negative scan can provide some reassurance—only 11% of such patients developed clinically definite MS by 10 years. However, these MRI data can only be extracted and used prognostically if the clinical picture is as secure as in the original study.
Numbness of the face, body, or extremities (arms and legs) is often the first symptom experienced by those eventually diagnosed as having MS.
MS is best detected by a neurological examination and painless imaging studies of the brain and spinal cord using magnetic resonance testing (MRI). An ophthalmologist also can use a test called an optical coherence tomography (OCT) to determine if the optic nerve has been affected by MS.
Early signs and symptoms of MS
tingling and numbness. pains and spasms. weakness or fatigue. balance problems or dizziness.
Nail problems are common, and they are not usually serious. If a person has multiple sclerosis (MS), nail problems can cause pain or discomfort. While nail issues are not directly related to the disease, determining the cause may help prevent a person with MS from experiencing further discomfort.
The case for Epstein-Barr virus (EBV)
The studies found that: Antibodies (immune proteins that indicate a person has been exposed) to EBV were significantly higher in people who eventually developed MS than in control samples of people who did not get the disease.
Blood tests can't currently result in a firm diagnosis of MS, but they can rule out other conditions. These other conditions include: Lyme disease. syphilis.
MS can be among the most difficult of all diseases to diagnose because of the bewildering number of symptoms it causes and the multiple ways in which they can present.
Lesions may be observed anywhere in the CNS white matter, including the supratentorium, infratentorium, and spinal cord; however, more typical locations for MS lesions include the periventricular white matter, brainstem, cerebellum, and spinal cord.
Magnetic resonance imaging, or MRI, is a wonderful tool to help diagnose and follow people with MS. MRI is safe and relatively non-invasive yet can provide very detailed images of the brain and spinal cord that can reveal MS lesions (also known as demyelination, spots, or plaques) and changes in MS activity over time.
MS activity appears on an MRI scan as either bright or dark spots. Typical MS lesions tend to be oval or frame shaped. MS lesions can appear in both the brain's white and gray matter. Healthcare professionals may use a chemical contrast dye called gadolinium to improve the brightness of MRI scan images.