There is no single diagnostic study of choice for the diagnosis of multiple sclerosis, but multiple sclerosis can be diagnosed based on clinical presentation, MRI findings, and CSF analysis.
Investigations:
Among the patients who present with clinical signs of multiple sclerosis, the CSF analysis is the most specific test for the diagnosis.
Among the patients who present with clinical signs of multiple sclerosis, the MRI is the most sensitive test for diagnosis.
New criteria: No longer a need to have separate MRIs run; Dissemination in time, demonstrated by: Simultaneous presence of asymptomatic gadolinium-enhancing
and nonenhancing lesions at any time; or A new T2 and/or gadolinium-enhancing lesion(s) on follow-up MRI, irrespective of its timing with reference to a baseline scan; or Await a second clinical attack. [This allows for quicker diagnosis without sacrificing specificity, while improving sensitivity]
New criteria: Dissemination in space and time, demonstrated by:
For DIS: 1 or more T2 lesion in at least 2 of 4 MS-typical regions of the CNS (periventricular, juxtacortical, infratentorial, or spinal cord); or Await a second clinical attack implicating a different CNS site; and For DIT: Simultaneous presence of asymptomaticgadolinium-enhancing and non-enhancing lesions at any time; or A new T2 and/or gadolinium-enhancing lesion(s) on follow-up MRI, irrespective of its timing with reference to a baseline scan; or Await a second clinical attack.
Insidious neurological progression suggestive of MS (primary progressive MS)
New criteria: One year of disease progression (retrospectively or prospectively determined) and two or three of the following:
Evidence for DIS in the brain based on 1 or more T2 lesions in the MS-characteristic (periventricular, juxtacortical, or infratentorial) regions
Evidence for DIS in the spinal cord based on 2 or more T2 lesions in the cord
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↑McDonald WI, Compston A, Edan G, Goodkin D, Hartung HP, Lublin FD, McFarland HF, Paty DW, Polman CH, Reingold SC, Sandberg-Wollheim M, Sibley W, Thompson A, van den Noort S, Weinshenker BY, Wolinsky JS (July 2001). "Recommended diagnostic criteria for multiple sclerosis: guidelines from the International Panel on the diagnosis of multiple sclerosis". Ann. Neurol. 50 (1): 121–7. PMID11456302.
↑Dobson R, Ramagopalan S, Davis A, Giovannoni G (August 2013). "Cerebrospinal fluid oligoclonal bands in multiple sclerosis and clinically isolated syndromes: a meta-analysis of prevalence, prognosis and effect of latitude". J. Neurol. Neurosurg. Psychiatry. 84 (8): 909–14. doi:10.1136/jnnp-2012-304695. PMID23431079.
↑McLean BN, Luxton RW, Thompson EJ (October 1990). "A study of immunoglobulin G in the cerebrospinal fluid of 1007 patients with suspected neurological disease using isoelectric focusing and the Log IgG-Index. A comparison and diagnostic applications". Brain. 113 ( Pt 5): 1269–89. PMID2245296.
↑Gobbin F, Zanoni M, Marangi A, Orlandi R, Crestani L, Benedetti MD, Gajofatto A (January 2019). "2017 McDonald criteria for multiple sclerosis: Earlier diagnosis with reduced specificity?". Mult Scler Relat Disord. 29: 23–25. doi:10.1016/j.msard.2019.01.008. PMID30658260.
↑McDonald WI, Compston A, Edan G, Goodkin D, Hartung HP, Lublin FD, McFarland HF, Paty DW, Polman CH, Reingold SC, Sandberg-Wollheim M, Sibley W, Thompson A, van den Noort S, Weinshenker BY, Wolinsky JS (July 2001). "Recommended diagnostic criteria for multiple sclerosis: guidelines from the International Panel on the diagnosis of multiple sclerosis". Ann. Neurol. 50 (1): 121–7. PMID11456302.