Symptoms of lumbar myositis include low back pain, lumbar pressure and muscle spasm. 1. Lumbar back pain: the symptoms of lumbar myositis manifest as diffuse soreness and pain in the lumbar back, especially in the two sides of the lumbar back muscles and above the iliac crest, which is more obvious. Prolonged inactivity or excessive activity can induce pain, especially bending, carrying heavy objects or rainy weather, the symptoms are aggravated. 2. Lumbar pressure and pain: the lumbar region may have a wide range of pressure and pain sensation, when pressed, there is a touch of the characteristics, when touching may touch the stripes or nodules. When there is climate change such as rainy days or in a humid environment, the pain is obviously aggravated, and when there is bad mood, the pain will also be aggravated. 3. Muscle spasm: the movement of the waist will also be obviously limited, muscle spasm, stiffness and ankylosis, sometimes accompanied by the feeling of lower limb discharge. Lumbar myositis is aggravated after exertion and when cold, and relieved after rest. Lumbar myositis may also have other symptoms, if the above and other symptoms, it is recommended to go to the hospital in time, early formal treatment, so as not to delay the condition.