The treatment principle, in this case, revolves around the belief that pain is primarily caused by inflammation. The approach involves using massage techniques to alleviate the inflammation and remove excess inflammatory fluid from the affected tissues. Additionally, tight muscles are also targeted for massage, as it was commonly believed that a tight muscle would contribute to or exacerbate the pain experienced by individuals. However, it’s important to note that this approach seems to stem from a general understanding of pain and is not necessarily based on scientific evidence.