Worst Scratch/Itch NRS assesses the average itch intensity over the previous 24 hours4
It is a patient-reported measure that uses a 0- to 10-point scale, with which caregivers of infants to preschoolers aged 6 months to 5 years were asked:
“How would you rate your child’s scratching/itching at its worst in the past 24 hours?”
0 - NONE
1
2
3
4
5
6
7
8
9
10 - THE WORST
IMAGINABLE
A reduction of at least 4 points in Worst Scratch/Itch from baseline is a clinically meaningful change.2