Cognitive psychological reaction, although it seems absurd, sometimes reveals clues to physical health. Psychologists believe that dreams seem to be a tool that some people don't know yet.
Physical changes known to consciousness will respond. For example, some hepatitis patients will have anxious and fearful dreams a few days before the onset, and some patients complain that they have feelings in their dreams.
Right rib injury pain, etc. Nightmares may be the prediction of diseases, so long-term nightmares should attract our attention, and we can consider consulting a doctor and doing a physical examination.