Left leg numbness and pain, painful even when changing sleeping positions, with a history of lumbar disc herniation—what should I do?

For symptoms of numbness and pain in the left leg, with pain occurring even when changing positions during sleep, along with a history of lumbar disc herniation, the condition is most likely caused by nerve root compression due to lumbar disc protrusion. To relieve this discomfort, the following measures are recommended: 1. Bed rest: Use a firm mattress and place a soft pillow under the lower back to relax the lumbar spine. During acute episodes, bed rest is strongly advised. Even after pain subsides, appropriate rest should still be maintained. 2. Medication: Use non-steroidal anti-inflammatory analgesics such as Voltaren (diclofenac) or Celebrex (celecoxib), along with neurotrophic agents like methylcobalamin, to alleviate pain and numbness. 3. Physical therapy: Apply physical treatments such as infrared radiation or heat application to improve blood circulation and support therapeutic effects. 4. Avoid poor posture: Maintain proper sitting posture, avoid staying in one position for prolonged periods, and continue sleeping on a firm mattress to reduce pressure on the lumbar spine. If the above measures fail to provide effective relief, surgical intervention may be considered.