Usually it bleeds, scabs, and skin grows under the scab, taking a week or so.
"A Matter of Proportion"
Anne Walker
They are a slow, quiet, well-meaning hospitable people, extremely conservative in their opinions as well as their habits, very sparing, because they have little ready money, very suspicious, because afraid of being out-witted by the English traders, and many of them so old-fashioned in their theory of the universe as to object to legislation against sheep scab, because they regard it as a visitation of Providence, to be combated only by repentance and not by ordinary human means.
"Impressions of South Africa"
James Bryce
Instead of a face, one saw a blackened and disgusting scab.
"The Memoires of Casanova, Complete The Rare Unabridged London Edition Of 1894, plus An Unpublished Chapter of History, By Arthur Symons"
Jacques Casanova de Seingalt