the late-stage Ice addict's look
Her face has the late-stage Ice addict’s concave long-jawed insectile look.
Context
The disease legible on the face as a type: Ruth van Cleve's concave, long-jawed, insectile look is the late-stage Ice addict's signature, the body's structure remade by the drug into something the narrator can classify at a glance. It's the street-bottom's physiognomy, the substance having rewritten a person into a recognizable category of ruin.