Who is at risk: Anyone who suffers lower back pain, a back injury, or a herniated disk can develop sciatica, a type of nerve pain.

• 坐骨神经痛常由几天至数星期会渐消失；但亦有变为慢性且引起麻木麻痹至下腿；有些较严重的膝神经失去反射；大小便会失禁；及性功能失调.