While there is no single test for Multiple Sclerosis, several strategies, such as the medical history, neurologic exams, magnetic resonance imaging (MRI) and spinal fluid analysis, are used to determine whether a person has MS…

…Criterion for a diagnosis of MS include damage in at least two separate areas of the central nervous system, which occurred at least one month apart, as well as the exclusion of other possible diagnoses. For this purpose, physicians also conduct tests to evaluate mental, emotional and language functions, movement, coordination and the five senses.

There are also tests, such as visual evoked potentials (VEP) and fluid analyses, which are used to look for further damages in persons, who have only experienced one attack of MS-like symptoms. People with these attacks (which are also called clinically-isolated syndrome (CIS)) do not necessarily have to develop MS.