In some cases, numbness in the lower legs may be one of the signs of certain diseases. You should seek immediate medical attention if you have numbness in your lower legs that appears to be
numbness appears suddenly and gets progressively worse.
Numbness appearing in both limbs.
Numbness that is recurrent.
numbness that seems to be associated with certain postures, movements or prolonged physical work, especially sports involving the lower extremities
Affects only a part of the limb, such as a toe or a finger.