Lumbar disc herniation is one of the more common clinical diseases of the spinal nervous system. Patients with lumbar disc herniation mostly show lumbago in the early stage, i.e. lumbago is aggravated when sitting, bending, coughing or sneezing, but lumbago is alleviated after lying in bed, or discogenic lumbago appears, in addition to lower limb symptoms, such as numbness, pain, soreness and coldness of the lower limbs, etc. In severe cases, not only the nerve roots are compressed, but also the cauda equina nerve, and symptoms such as In severe cases, not only the nerve roots are compressed, but also the cauda equina nerve, resulting in symptoms such as urinary and fecal dysfunction and even incontinence.
The abnormal sensation in the lower limbs of patients with lumbar disc herniation is caused by nerve root compression and irritation, which is mainly manifested by numbness, coldness and chilliness in the posterior and lateral side of the affected lower limbs, and sometimes an ankylosis and burning sensation.