1. It may be costal chondritis: you press the painful part with your hand, and there is obvious tenderness locally, which is costal chondritis. Take vitamin B 1, vitamin B6 tablets and SMZ tablets for one week.
If you are over 40 years old, it may be a heart problem. Take compound Danshen dripping pills and aspirin enteric-coated tablets 10- 15 days.
3. Check blood routine: Is there anything wrong with blood?