Table II.
Itch intensity and duration
| Itch Characteristic | Itch Characteristic Subcategory | Brachioradial Pruritus | Notalgia Paresthetica | Total |
|---|---|---|---|---|
| Itch intensity |
Visual analog scale worst 24 h (n = 784) |
Mean (SD): 7.2 (2.5) Median [IQR]: 8 [6; 9] Range: 0-10 |
Mean (SD): 7.1 (2.1) Median [IQR]: 7.5 [6; 8.9] Range: 1.3-10 |
Mean (SD): 7.2 (2.4) Median [IQR]: 8 [6; 9] Range: 0-10 |
|
Visual analog scale average 24 h (n = 823) |
Mean (SD): 5.7 (2.6) Median [IQR]: 6 [4; 8] Range: 0-10 |
Mean (SD): 6.0 (2.2) Median [IQR]: 6 [4.5; 7.8] Range: 0-10 |
Mean (SD): 5.8 (2.5) Median [IQR]: 6 [4; 8] Range: 0-10 |
|
|
Numeric rating scale worst 24 h (n = 353) |
Mean (SD): 6.7 (2.8) Median [IQR]: 7 [5; 9] Range: 0-10 |
Mean (SD): 6.3 (2.8) Median [IQR]: 7 [4; 8.3] Range: 1-10 |
Mean (SD): 6.6 (2.8) Median [IQR]: 7 [5; 9] Range: 0-10 |
|
| Itch duration/frequency |
Total itch duration (n = 783) |
<6 wk: 7 6 wk-6 mo: 42 6 mo-1 y: 92 1-10 y: 320 >10 y: 109 |
<6 wk: 1 6 wk-6 mo: 10 6 mo-1 y: 35 1-10 y: 122 >10 y: 45 |
<6 wk: 8 6 wk-6 mo: 52 6 mo-1 y: 127 1-10 y: 442 >10 y: 154 |
|
Itch duration day/night (n = 878) |
Day: 190 Night: 88 Day and night: 370 |
Day: 110 Night: 20 Day and night: 100 |
Day: 300 Night: 108 Day and night: 470 |
|
|
Frequency of itch (n = 829) |
Daily: 493 Weekly: 77 Monthly: 31 |
Daily: 201 Weekly: 22 Monthly: 5 |
Daily: 694 Weekly: 99 Monthly: 36 |
IQR, Interquartile range; SD, standard deviation.