How did the dead character in On Earth We're Briefly Godless get addicted to Oxy?

In On Earth We’re Briefly Gorgeous , Trevor’s Oxy addiction is traced to a high-school ankle injury: Little Dog says Trevor was put on OxyContin after breaking his ankle sophomore year, and by the time the ankle healed, he was already hooked.

What the text suggests

• The book links Trevor’s addiction to a medical prescription, not to recreational use at first.

• The injury healed in about a month, but the pills had already taken hold by then.

• The novel uses Trevor’s story to show how easily prescription opioids could lead into deeper addiction.

Why it matters

Trevor’s arc is part of the novel’s broader focus on drugs and addiction, especially the way Oxy, cocaine, fentanyl, and heroin shape the lives of the characters around Little Dog.

If you want, I can also give you a spoiler-light version or explain how Trevor fits into the novel’s larger themes.