sore; skin ulcer

frostbite; chilblains

mouth ulcer

syphilis; syphilitic ulcer

acne; pustule

acne

lupus (skin disease)

scabies; welts

acne

favus (skin disease)

(dialect) favus of the scalp (skin disease)

bedsore

(medicine) pemphigus

chloracne

to cut one's flesh to cover a sore (idiom); faced with a current crisis, to make it worse by a temporary expedient

heavily damaged; (fig.) full of holes; riddled with problems

(medicine) lupus erythematosus

lupus erythematosus

systemic lupus erythematosus (SLE)