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Mayo Scoring System for Evaluating the Activity of Ulcerative Colitis

Purpose: To evaluate a patient with ulcerative colitis using the Mayo Scoring System.

Description

The clinical activity of ulcerative colitis can be evaluated with a score developed at the Mayo Clinic. This can be used for the initial evaluation and to monitor the patient's response to therapeutic interventions.


Parameters:

(1) stool frequency

(2) rectal bleeding

(3) endoscopic findings

(4) physician's global assessment

 

Parameter

Finding

Points

stool frequency

not increased (normal for patient)

0

 

1 to 2 stools per day more than normal

1

 

3 to 4 stools per day more than normal

2

 

>= 5 stools per day more than normal

3

rectal bleeding

none

0

 

streaks of blood with stool less than half of the time

1

 

obvious blood with stool most of the time

2

 

blood only passed

3

endoscopic findings

normal

0

 

inactive disease

0

 

mild disease

1

 

moderate disease

2

 

severe disease

3

physician's global assessment

normal

0

 

mild activity

1

 

moderate activity

2

 

severe activity

3

 

where:

• Mild endoscopic disease includes erythema, mild friability and/or decreased vascular pattern.

• Moderate endoscopic disease includes marked erythema, lack of vascular pattern, definite friability and mucosal erosions.

• Severe endoscopic disease includes spontaneous bleeding and mucosal ulcerations.

 

total score =

= SUM(points for all 4 parameters)

 

Interpretation:

• minimum score: 0

• maximum score: 12

• The higher the score the more severe the disease.

 

A "partial" Mayo score consists of 3 of the parameters (stool frequency, rectal bleeding, global assessment) without endoscopy.


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Specialty

Objective

ICD-10