This book provides all the necessary information so that the reader can learn to competently analyze their pain sensations and understand when it is enough to take a pill (and which one), and when it is necessary to urgently seek help from specialists. To do this, the following information is presented: causes of pain; mechanisms of pain formation and control; types of pain, determination of their specificity; what is the pain threshold; why painful shock is terrible; how to correctly determine the intensity and true cause of pain; what to do if you have pain before the doctor arrives; side effects of painkillers; rules for taking painkillers; a thousand and one ways to relieve pain; pain relief without drugs.