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Case Lab · Type B · Boundary

F18

Three times this term, but no craving in between

Priya, 15, has inhaled solvent fumes with classmates on three occasions this school term, on the most recent occasion suffering a fall and a head injury while intoxicated. She reports no craving or urge to use between these occasions, no difficulty stopping once each occasion's supply ran out, and says she has not thought about it again until the next time her classmates suggested it.

What is the best-supported classification?