Numbness
Numbness is the partial or complete loss of sensation in the fingertips, toes, hands, or legs, commonly due to nerve compression from a slip disc.

Symptoms
Numbness is one of the most common symptoms of a slip disc in the neck or lower back. It can occur anywhere along the course of the nerve — in the lower back, buttocks, thigh, calf, neck, upper back, shoulder, hands, and fingers. You may experience:
Mild to severe pain in the lower back, buttocks, thigh, calf, and foot.
Difficulty or increasing pain with lifting and bending.
Worsening pain when resting, sitting, walking or standing.
Back or neck pain that comes and goes.
Stiffness or increasing pain in the morning.
Pain radiating from the buttocks or legs (one or both sides).
Tingling, numbness, burning, imbalance or weakness in the legs and feet.
Trouble urinating or passing motion.