Mayo Score / Disease Activity Index (DAI) for Ulcerative Colitis
Assesses severity of ulcerative colitis.
When to Use
1-2 stools/day more than normal+1
3-4 stools/day more than normal+2
>4 stools/day more than normal+3
Visible blood with stool less than half the time+1
Visible blood with stool half of the time or more+2
Passing blood alone+3
Normal or inactive disease0
Mild disease (erythema, decreased vascular pattern, mild friability)+1
Moderate disease (marked erythema, absent vascular pattern, friability, erosions)+2
Severe disease (spontaneous bleeding, ulceration)+3
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