Evaluation and Examination of Visceral Pain

Pain is a subjective experience, and quantitative analysis of this subjective feeling is necessary for clinical work. Pain assessment refers to the determination and evaluation of the intensity and nature of pain in patients before and during pain treatment using certain methods. Generally, pain measurement refers to the measurement of pain intensity using measurement criteria (metric). Pain assessment, on the other hand, includes the measurement of the interaction of different factors in the whole process of pain occurrence. The purpose of pain assessment includes the following aspects: (1) to clarify the diagnosis, to determine the characteristics of pain more accurately, and to help determine the most effective treatment plan for pain control; (2) to provide a more objective basis for adjusting the treatment plan in a timely manner by combining changes in the patient's subjective feelings during the pain diagnosis and treatment process, and to reduce or avoid the bias caused by simply relying on the patient to make retrospective comparisons; (3) to use quantitative methods to estimate treatment effects, compare and summarize the efficacy of various methods for different treatments (including effective and non-effective treatments, pharmacological, physical, and psychological treatments), further select effective treatments, and determine future treatment guidelines according to the disappearance, reduction or relief of pain and its degree and ineffectiveness; and (4) in pain research, make judgmental analysis and comparisons of scientific findings.