Before we begin: Sciatica is a symptom of a problem with the sciatic nerve causing pain, weakness, numbness, or tingling. Read about causes, tests, and treatment.
This tutorial walks you through everything you need to know about sciatica. We explain it in plain language, step by step, so whether you are a student, a patient, or simply curious, you will come away with a solid understanding.
We cover what it is, why it matters, how it is diagnosed, and what you can do about it. Key facts are called out along the way.
Sciatica is a symptom of a problem with the sciatic nerve, the largest nerve in the body. It controls muscles in the back of your knee and lower leg and provides feeling to the back of your thigh, part of your lower leg, and the sole of your foot. When you have sciatica, you have pain, weakness, numbness, or tingling. It can start in the lower back and extend down your leg to your calf, foot, or even your toes. It’s usually on only one side of your body.
Causes of sciatica include:
A ruptured intervertebral disk
Narrowing of the spinal canal that puts pressure on the nerve, called spinal stenosis
An injury such as a pelvic fracture.
In many cases no cause can be found.
Sometimes sciatica goes away on its own. Treatment, if needed, depends on the cause of the problem. It may include exercises, medicines, and surgery.
Categories: Bones, Joints and Muscles, Brain and Nerves, Symptoms.
Source: National Institutes of Health — National Institute of Arthritis and Musculoskeletal and Skin Diseases.
Key Takeaways
Understanding sciatica is an important part of taking charge of your health. Here is what to remember:
- Know the signs — Recognizing early symptoms can lead to earlier diagnosis and better outcomes.
- Talk to your provider — If you have concerns or a family history of this condition, bring it up at your next checkup.
- Stay informed — Medical knowledge evolves. Keep learning and asking questions.
- You are not alone — Many people deal with this condition. Support groups and educational resources can help.