Over the past couple weeks I have had a quick-fading stabbing/piercing pain in my right arm. It comes without warning and lasts about five-ten seconds. It literally feels as though someone is driving a knife through my bicep. It is always in my right bicep and always in the same place. I have a doctors appointment coming up soon but I would like some ideas as to what it might be. I'm concerned that it is more than just a muscle spasm or nerve pain.
I also occasionally get tightness in my chest along with it.
I also occasionally get tightness in my chest along with it.