excoriation

noun

ex·​co·​ri·​a·​tion (ˌ)ek-ˌskōr-ē-ˈā-shən, -ˌskȯr- 

1

: the act of abrading or wearing off the skin

chafing and excoriation of the skin

2

: a raw irritated lesion (as of the skin or a mucosal surface)

excoriate

ek-ˈskōr-ē-ˌāt 

transitive verb

excoriated; excoriating