Hidden pain in the left mid-abdomen with back numbness, the possible causes are overwork, lumbar disc herniation, stones and so on. 1. Overwork: may be due to work and life overwork, resulting in the left mid-abdominal hidden pain with back numbness. 2. Lumbar disc herniation: due to trauma, strain injury, often living in a wet and cold environment, or due to changes in their own lumbar disc structure, caused by lumbar disc herniation, the left mid-abdominal radiating pain, back waist numbness symptoms. 3. Stones: may be due to kidney stones, urinary stones, etc., caused by the left mid-abdominal pain with back waist numbness. Left mid-abdominal pain with back waist numbness may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.