Lumbar discomfort but no pain may be caused by physiological factors such as overexertion, or it may be caused by pathological reasons such as lumbar fasciitis, lumbar spondylosis, urinary system diseases, and so on. 1. Overwork: Due to the accumulation of local inflammatory metabolites caused by overwork, the patient’s lumbar region can be sore and swollen, and other uncomfortable but not painful symptoms. 2. Lumbar fasciitis: due to long-term strain caused by the patient’s lumbar muscles, tendons, ligaments and other soft tissues of aseptic inflammation, the patient may appear in the lumbar feeling uncomfortable but not painful. 3. Lumbar spine lesions: such as lumbar tumors in the early stage, minor fractures, lumbar disc herniation in the early stage and other lesions, can cause patients to appear in the lumbar feeling uncomfortable but not painful symptoms. 4. Urological diseases: such as hydrocele, renal tumors and other diseases, in the early stage of the patient can appear lumbar soreness and discomfort, feeling uncomfortable but not pain. There may be other reasons for the discomfort but no pain in the lower back, it is recommended to go to the hospital to improve the examination, to clarify the cause of the disease and then further treatment or therapy.