The symptoms of lumbar soreness and swelling when lying in bed are due to excessive strain during the day, or some bending movements, or high-intensity sports during the day, the waist gathered too much lactic acid, local stimulation, triggering the symptoms of lumbar soreness and swelling. It may also be due to sleeping in a bed that is not suitable for softness and hardness, local long time squeezed and friction and induced the symptoms of lumbar pain and swelling lying in bed. The above-mentioned situation, you can properly give the waist hot compress and massage to relieve. If the symptoms of soreness and swelling are relieved by a period of treatment, which is basically caused by some daily life, it is generally not a big problem. If the symptoms are not relieved or are progressively aggravated by strict conservative treatment, then you must go to the hospital for a clear diagnosis and choose a reasonable treatment.