Expanded Disability Status Scale (EDSS)
Expanded Disability Status Scale (EDSS)
Expanded Disability Status Scale (EDSS)
The Expanded Disability Status Scale (EDSS) is a commonly used scale for assessing the level of disability in people with multiple sclerosis. The
scale was originally described by Kurtze (1983) and has been adapted on the Multiple Sclerosis Trust website.
The Criteria requires that each of the functional systems listed below be reviewed. The description in the table below should be referred to and
for ambulant patients a score from 0 (no disability) to 5.5 (more severe disability) be indicated. If the patient has impairment such that assistance
is required to enable walking (cane, crutches, frame) the score will be from 0 to 6.5, if a wheelchair is required for all but a few steps the score
will be 7.0 – 8.5, if confined to bed the score will be 9 and death due to MS is scored 10.
Functional systems
pyramidal - weakness or difficulty moving limbs
cerebellar - ataxia, loss of coordination or tremor
brainstem - problems with speech, swallowing and nystagmus
sensory - numbness or loss of sensations
bowel and bladder function
visual function
cerebral (or mental) functions
other
ALL functional system scores must be scored individually and then the EDSS calculated from the table below.
Score Description
0.0 No disability
3.0 Moderate disability in one FS, or mild disability in three or four FS. No impairment to walking
3.5 Moderate disability in one FS and more than minimal disability in several others. No impairment to walking
4.0 Significant disability but self-sufficient and up and about some 12 hours a day. Able to walk without aid or rest for 500m
Significant disability but up and about much of the day, able to work a full day, may otherwise have some limitation of full activity or
4.5
require minimal assistance. Able to walk without aid or rest for 300m
Disability severe enough to impair full daily activities and ability to work a full day without special provisions. Able to walk without
5.0
aid or rest for 200m
5.5 Disability severe enough to preclude full daily activities. Able to walk without aid or rest for 100m
6.0 Requires a walking aid - cane, crutch, etc. - to walk about 100m with or without resting
6.5 Requires two walking aids - pair of canes, crutches, etc. - to walk about 20m without resting
Unable to walk beyond approximately 5m even with aid. Essentially restricted to wheelchair; though wheels self in standard
7.0
wheelchair and transfers alone. Up and about in wheelchair some 12 hours a day
Unable to take more than a few steps. Restricted to wheelchair and may need aid in transferring. Can wheel self but cannot carry
7.5
on in standard wheelchair for a full day and may require a motorised wheelchair
Essentially restricted to bed or chair or pushed in wheelchair. May be out of bed itself much of the day. Retains many self-care
8.0
functions. Generally has effective use of arms
8.5 Essentially restricted to bed much of day. Has some effective use of arms retains some self-care functions
9.5 Confined to bed and totally dependent. Unable to communicate effectively or eat/swallow
The Expanded Disability Status Scale has been replicated from the Multiple Sclerosis Trust website at: