A scar is left behind when a child is born through a Cesarean section. Some women heal very well; other women have scars that are red, thick, and raised. Once the scar is healed, everything should function as normal.
For some though, the enlarged scar tissue causes numbing, tightness or paresthesia in the region surrounding the scar. Some women even experience numbness, tightness or paresthesia all the way down to their genitals.
For some other women, the scar tissue may make it difficult for you to engage your abdominal muscles. This may result in weakness in the core muscles, or even back pain.