What causes numbness in the abdomen? Numbness in the abdomen is mainly due to the following reasons: first, lumbar disc herniation, there are some patients with lumbar disc herniation, such as belt tied too tightly can easily damage the iliopsoas nerve, numbness in the abdomen, mainly numbness in the upper abdomen, there are also some patients due to the abdomen is too large, such as abdominal obesity. There are also some women in the middle and late stages of pregnancy, due to the increase in the size of the fetus will also appear abdominal bulge, which will compress the iliopsoas nerve and iliolumbar nerve, easily causing numbness in the abdomen, some patients will also be accompanied by numbness in the inner thighs. There is another reason for abdominal numbness, we should ask the patient if he has recently undergone a femoral artery puncture, and if some patients with femoral artery puncture have a femoral artery hematoma, the hematoma compression will also cause damage to the iliopsoas nerve and numbness in the abdomen.