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Table 1 Summary of measurements of pruritus in the literature

From: Transformation of 5-D itch scale and numerical rating scale in chronic hemodialysis patients

Uni-dimensional scale
 Visual analogue scale (VAS), numerical rating scale (NRS), and verbal rating scale (VRS)
Multi-dimensional scales
 5D itch scale, four-item questionnaire, itch severity scale, pruritus grading system
Measurement of scratching episodes
 Measurement of limb movements
Imaging of brain activity
Measurement of itch threshold
Scales assessing the psychosocial condition of the patient related to itch
 ItchQoL, Dermatology Life Quality Index and Beck’s Depression Inventory