McDonald criteria Totally Explained

Everything about The Mcdonald Criteria totally explained

The McDonald criteria are diagnostic criteria for multiple sclerosis. In April 2001 an international panel in association with the National Multiple Sclerosis Society (NMSS) of America recommended revised diagnostic criteria for ms. They make use of advances in MRI imaging techniques and are intended to replace the Poser criteria and the older Schumacher criteria. The new criteria facilitate the diagnosis of MS in patients who present with signs and symptoms suggestive of the disease. These include monosymptomatic disease, disease with a typical relapsing-remitting course or insidious progression but no clear attacks and remissions. The McDonald criteria for the diagnosis of multiple sclerosis were revised in 2005 to clarify exactly what is meant by an "attack," "dissemination," a "positive MRI," etc.

Diagnostic Criteria

Clinical Presentation	Additional Data Needed
* 2 or more attacks (relapses) * 2 or more objective clinical lesions	None; clinical evidence will suffice (additional evidence desirable but must be consistent with MS)
* 2 or more attacks * 1 objective clinical lesion	Dissemination in space, demonstrated by: * MRI * or a positive CSF and 2 or more MRI lesions consistent with MS * or further clinical attack involving different site
* 1 attack * 2 or more objective clinical lesions	Dissemination in time, demonstrated by: * MRI * or second clinical attack
* 1 attack * 1 objective clinical lesion (monosymptomatic presentation)	Dissemination in space demonstrated by: * MRI * or positive CSF and 2 or more MRI lesions consistent with MS and Dissemination in time demonstrated by: * MRI * or second clinical attack
Insidious neurological progression suggestive of MS (primary progressive MS)	Positive CSF and Dissemination in space demonstrated by: * MRI evidence of 9 or more T2 brain lesions * or 2 or more spinal cord lesions * or 4-8 brain and 1 spinal cord lesion * or positive VEP with 4-8 MRI lesions * or positive VEP with <4 brain lesions plus 1 spinal cord lesion and Dissemination in time demonstrated by: * MRI * or continued progression for 1 year

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