relapse

I'm fairly certain my brother-in-law relapsed on heroin, and I don't know how to tell my sister that her husband relapsed.

No addiction or recovery story is the same. You don’t always kick the habit and you don’t always find the forgiveness which you seek. Around 60% of addicts relapse, according to the U.S. government. Others die. Others end up prison. Others lose their kids. Some make a full recovery.