Sciatica refers to pain caused by irritation or compression of the sciatic nerve, which runs from the lower back down the back of each leg. It’s not a disease itself, but rather a symptom of an underlying condition. Common causes include herniated discs, spinal stenosis, and piriformis syndrome. Symptoms can range from mild tingling to severe, debilitating pain, and may include numbness, weakness, and “pins and needles” sensations.
Causes:
Herniated discs: A slipped or bulging disc in the spine can press on the sciatic nerve.
Spinal stenosis: . Narrowing of the spinal canal can compress the nerve roots that form the sciatic nerve.
Piriformis syndrome: The piriformis muscle, located in the buttocks, can spasm and compress the sciatic nerve.
Other causes: Less common causes include spinal tumors, injuries, or conditions like spondylolisthesis.
Symptoms:
Pain: Can be sharp, shooting, or burning, and may feel like an electric shock. It often radiates from the lower back or buttock down the back of the leg, sometimes extending to the foot or toes.
Numbness and tingling:
A “pins and needles” sensation or numbness in the affected leg is also common. Weakness:
Muscle weakness in the leg or foot may occur, making it difficult to move the leg or foot properly.
Pain with certain movements: Coughing, sneezing, or prolonged sitting can exacerbate the pain.