Numbness
Numbness means a loss of feeling sensation in parts of your body, typically associated with nerve damages and often accompanied by other sensation changes, so it is no surprise that pressure on the sciatic nerves may cause loss of sensation. Numbness can occur along a single nerve or symmetrically, usually affects your periphery nerves.
People with numbness often can’t feel pain, light touch, vibration or temperature, so they have problems with body balance and coordination.
Sciatica usually has effects on only one side of your lower body, so people with sciatica may experience loss of feeling in their lower back, buttocks down to the feet, where the sciatic nerves are found. These parts of the body may feel lifeless, cold, and without a sense of feel. Loss of sensation may last for days or up to a few weeks in acute sciatic pain, while it persists for several months in chronic sciatic pain. [3]