What is the medical pain of 12 and 13?

The World Health Organization (WH0) divides the degree of pain into

O degree: no pain;

I degree: mild pain, intermittent pain, no need for medication;

Second degree: moderate pain, persistent, affecting rest and needing painkillers;

ⅲ degree: severe pain, which is persistent and cannot be relieved without medication;

Ⅳ degree: severe pain, which is persistent severe pain with changes in blood pressure and pulse. There is no standard for the grading of 12 pain. There is a popular joke on the Internet that 12 hurts, which is not a serious division in medicine. The commonly used clinical expression of patients' own pain is to mark the pain degree from 1 to 10, and 10 is the most painful and unbearable degree for patients. Then, patients themselves assess their current pain level to help doctors use painkillers. 1 online pain is mosquito bites, 12 pain is childbirth. 13 pain, the answer is: the mosquito took a bite when giving birth. It's actually a joke.