A pattern of blemishes in an area of skin resulting from the skin condition.
A skin condition, usually of the face, that is common in adolescents. It is characterised by red pimples, and is caused by the inflammation of sebaceous glands through bacterial infection.
Any burn on the skin caused by scraping the skin against a surface.
A black mark left on a road surface from the sliding or skidding tires of a motor vehicle that has lost traction.
A visible feces stain left on underpants, trousers, or sometimes the toilet bowl.
Any other mark or stain left on a surface from a sliding or rubbing object.
A mark of a soiled finger wiped on a surface.