Neurological Functional Disorder-Neurologic Scale | Medical Algorithm

The British Medical Research Council (MRC) developed a scale for grading neurologic function and deficits.

Parameters:

(1) extent of the neurologic deficit

(2) functional ability

Neurologic Deficit	Functional Ability	Grade
none	normal, fully functional	1
mild	able to perform useful work	2
moderate	moderate impairment	3
severe	very limited	4
extreme, unable to make conscious responses	no useful function	5

where:

• A patient with Grade 3 changes may have difficulty moving limbs, moderate paresis or visual field defects.

• A patient with Grade 4 changes may be unable to use her/his limbs, have markedly reduced vision or have gross speech abnormalities.

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Medical Research Council (MRC) Neurologic Scale