The symptoms of low back pain and swelling may occur due to the following reasons: First, prolonged sitting, whether for study or work, or other reasons of sedentary, can lead to poor blood circulation in the low back, and the feeling of soreness and swelling, which is generally relieved or disappeared by appropriate activities of the low back. Second, the living environment or work environment conditions are poor, the temperature is relatively low, may make the low back by cold damp stimulation, resulting in the low back muscles, fascia appeared slight inflammation, and appear low back soreness and swelling discomfort. The symptoms can be significantly relieved by applying hot compresses locally or taking a hot bath, which can lead to an increase in symptoms when encountering weather changes. Third, sudden strenuous exercise or overexertion can also cause low back pain and swelling, but the symptoms usually do not disappear for more than 5 days.