Sciatica
Sciatica refers to compression of the sciatic nerve, causing pain that radiates from the lower back or buttocks down one or both legs.
of cases caused by a slipped disc

Symptoms
Sciatica is one of the most common symptoms experienced due to a slipped disc in the lower back. Pain can occur anywhere along the sciatic nerve — from the lower back through the buttocks, back of the thigh, calf, and into the foot.
How the pain feels —
Electric / shooting
Sharp, sudden shock down the leg
or
Dull aching
Deep, heavy ache from buttock down the leg
You may also experience:
Mild to severe pain radiating from the lower back through the buttocks and down the leg
Increasing pain with lifting and bending, especially from a seated position
Pain that worsens with prolonged sitting, standing, walking, or lying down
Morning stiffness that may increase or ease with movement throughout the day
Tingling, numbness, or burning in the leg, calf, foot, or toes
Muscle weakness or imbalance in the affected leg
Pain that comes and goes, often triggered by specific postures or movements
Reduced bladder or bowel control in severe cases — seek urgent attention