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Disability assessment

The core tool for assessing disability is the EDSS, which is used in randomised clinical trials and standard clinical practice. The EDSS has limitations that can be supplemented by the 25 foot walking test, cognitive function testing, the 9-hole peg test, visual acuity (VA) testing, including low contrast VA testing, and other measures. However, delegates involved in the session generally used only the EDSS.

Up to 70% of patients will develop cognitive disturbances during the course of their disease. However, EDSS doesn’t capture cognitive impairment. In recent years there has been a move to update the EDSS with the MSFC MS functional composite, which incorporates a test of executive function: PASAT (Paced Auditory Serial Addition Test), although this test is not routinely used in the clinic.