I’ve wondered the same thing. A lot of seizure meds do have nerve-calming effects, so it’s possible they’re dulling pain signals too, especially with injuries that would normally throb. I had something similar after a bad fall and was shocked how little I felt. Still worth keeping an eye on swelling or stuff that’s masked. I’ve also read about alternative approaches for nerve-related pain like CRPS, which helped me connect some dots. If you’re curious, get more info and see how others describe it.