Living with MS — MS Glossary

Day-to-day management and concepts

E

EDSS (Expanded Disability Status Scale)
The EDSS is a scale from 0 to 10 that doctors use to describe how much MS is affecting physical function, especially walking. Lower numbers ...
Living with MS

H

Heat Sensitivity
Heat sensitivity is the tendency for MS symptoms to get worse when your body temperature rises. Warm weather, hot showers, fevers, and inten...
Living with MS

L

Lesion
A lesion is a patch of nerve damage in the brain or spinal cord that shows up on an MRI. In MS, lesions are spots where the protective coati...
Living with MS

P

Pseudo-exacerbation
A pseudo-exacerbation is a temporary return or worsening of old MS symptoms caused by something other than new nerve damage. Common triggers...
Living with MS

R

Relapse
A relapse, also called an exacerbation or flare, is a new symptom or a clear worsening of an old symptom that lasts at least 24 hours and is...
Living with MS

S

Spoon Theory
Spoon theory is a way to talk about limited energy when you have a chronic illness. The idea is that you start each day with a set number of...
Living with MS
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Not medical advice. Always consult your care team.