“Sciatica is nerve pain from an injury or irritation to your sciatic nerve. In addition to pain, it can involve tingling or numbness in your back or butt that may radiate down your leg. You may also feel symptoms in your feet or toes.

There are two main types. No matter which type you have, the symptoms often feel the same. These include:

• True sciatica: This type happens when an injury or condition directly affects the sciatic nerve.
• Sciatica-like conditions: These conditions feel like sciatica but have other causes. They relate to nearby nerves or the group of nerves that form the sciatic nerve.

Healthcare providers often use the term “sciatica” for both types. The difference usually matters most when your provider recommends treatment.”

Cleveland Clinic (Sciatica: What It Is, Causes, Symptoms, Treatment & Pain Relief)