Multiple Sclerosis Diagnosis and Treatment

Diagnostic Criteria

The diagnosis of Multiple Sclerosis requires objective demonstration of CNS lesions disseminated in both time and space, integrating MRI with clinical findings and excluding alternative diagnoses, as recommended by the American Academy of Neurology 1
At least one clinical event consistent with acute demyelination is essential for diagnosis, which cannot be made on MRI alone, according to the National Multiple Sclerosis Society 2
Diagnosis applies best to individuals aged 10-59 years with typical presentations, as stated by the Multiple Sclerosis Association of America 2

Relapsing-Remitting MS, which accounts for 85% of cases at onset, is characterized by acute neurological symptoms developing over hours to days, with common presentations including unilateral optic neuritis, partial myelitis, sensory disturbances, diplopia, internuclear ophthalmoplegia, and balance/gait dysfunction, as described by the European Multiple Sclerosis Platform 3, 4
Primary Progressive MS, which accounts for 15% of cases, is characterized by steadily increasing neurological disability from onset without distinct relapses, often presenting as progressive myelopathy, according to the International Multiple Sclerosis Federation 3, 4

Classic MS lesion features include focal T2 hyperintense lesions with sharp edges, ovoid/flame-shaped orientation perpendicular to ventricles, and periventricular location, as recommended by the American College of Radiology 3, 4
Gadolinium-enhancing lesions indicate active inflammation, as stated by the Radiological Society of North America 2

Oligoclonal bands specific to CSF (not present in serum) support diagnosis, as described by the National Institute of Neurological Disorders and Stroke 3, 4
Visual evoked potentials may show delayed conduction, according to the American Academy of Neurology 4

A multimodal approach is essential for symptom management, including physical modalities and activities, occupational and other therapies, and pharmacologic interventions individualized to each patient, as recommended by the Multiple Sclerosis Association of America 2, 4
Common symptoms requiring management include spasticity, fatigue, sexual dysfunction, as stated by the European Multiple Sclerosis Platform 4

Regular MRI monitoring is recommended to assess disease activity and treatment response, evaluating for new T2 lesions and gadolinium-enhancing lesions, as recommended by the American College of Radiology 2