Unless you were stabbed or shot or had appendicitis or pancreatitis or kidney stones or something (all of which qualify as acute to me and are suitable for a short course of narcotics), pain that severe is typically caused by inflammation of the nerves as they leave the spine. Or cancer.
Nerve pain is best treated with steroids, not narcotics.
I’ve been there. It was, by a huge margin, the worst pain I’ve ever experienced. My arms and shoulders hurt so much that I couldn’t do anything but think about the pain. The problem wasn’t in my arms. It was in my neck.
I didn’t know what a 10/10 was until then. All my other pain (even various surgeries) were just 5/10 compared to that.
Edit: I can’t even imagine why this is controversial. Please answer the most important question. Where did the pain come from?