abscess

/ˈæbˌsɛs/

noun

A swollen area within body tissue, containing an accumulation of pus.

once the abscesses burst, they usually discharge for several days before gradually healing up

ulcer,ulceration,cyst,boil,blister,sore,pustule,carbuncle,pimple,spot,papule,wen,whitlow,vesication,furuncle,canker