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Sciatica involves pain, tingling, or numbness that travels along the sciatic nerve — typically from the lower back or buttock down the back of the leg, sometimes reaching the calf or foot. That radiating pattern is the key distinction from ordinary back pain, which tends to stay localized. Sciatica is a nerve symptom, not just a muscle problem, and it often requires a different approach to care. If you're unsure whether what you're experiencing is sciatica, a conversation with your acupuncturist or primary care provider is a good place to start.