blackhead (n.)
- birthmark
- bleb
- blemish
- blister
- bulla
- check
- cicatrix
- comedo
- crack
- crater
- craze
- defacement
- defect
- deformation
- deformity
- disfiguration
- disfigurement
- distortion
- fault
- flaw
- freckle
- hemangioma
- hickey
- keloid
- kink
- lentigo
- milium
- mole
- nevus
- pimple
- pit
- pock
- pockmark
- pustule
- rift
- scab
- scar
- scratch
- split
- sty
- track
- twist
- verruca
- vesicle
- wale
- warp
- wart
- weal
- welt
- wen
- whitehead