There was no correlation between expression of IL-31 and pruritus severity assessed according to VAS (VAScurrent: ρ = −0.23, P = 0.34, VASmax⁡: ρ = −0.08, P = 0.73), as well as 12-item Itch Questionnaire (ρ = −0.11, P = 0.65). Here, IL31 is linked to Pruritus.