Hiya hope you are OK. I have a coke addiction and I’m 40days clean today and I’m doing my best to quit.
But I don’t know how needles can help his nose. He’s not a doctor.
I think the obvious thing to do is to check his arms, legs, neck, balls, everywhere.. For pin marks. If he refuses there is your answer.
But if he is not willing or even trying to change. God’s honest truth; move on, and get on with your life. He sounds like he doesn’t do anything at all but think of him self so you start doing it.