1. According to question 39, Health.com showed the pain site: the human body is a complex structure, and different parts of the human body have their specific functions and structures. When describing the pain site, it will be difficult for patients to accurately describe the specific location of pain because of their ignorance of medical knowledge or limitation of expression ability.
2, the time of illness: patients will be unable to accurately recall the exact time of illness because of memory loss, unclear expression or other reasons.