14 May 2019 Sciatica is pain in a lower limb that: Usually originates in the lumbar spine Can extend to the foot. It is usually accompanied by: Numbness Tingling Changes in sensitivity, sometimes described as an electric shock. Pain can vary in intensity and usually worsens with: Walking Standing Coughing Sneezing. Sciatica is not a disease. In the vast majority of cases it is a clinical manifestation of a disease of the lumbar spine . The conditions that most often cause sciatica are: Lumbar disc herniation Lumbar spinal stenosis Degenerative spondylolisthesis. Less often sciatica is associated with: Trauma Infection Tumours of the spine. Sciatica attacks are often overcome by rest and conservative treatment . Patients should see a spinal specialist if more serious symptoms develop, such as: Persistent, disabling pain Lack of strength in the limb Urinary or anal sphincter control disorders. This article was written with the support of physicians and other clinical professionals from the Hospital da Luz network. The content published in the Health Guide is intended for the general public and is provided for informational and educational purposes only. It does not replace individual medical assessment, diagnosis, or personalized clinical advice from a qualified healthcare professional. The content is produced or reviewed by physicians and other healthcare professionals at Hospital da Luz and is based on the knowledge available at the time of publication or the most recent update, as indicated at the beginning of each item.