Chronic pain lasts for months or years and can occur in different parts of the body. It interferes with daily life and can lead to depression and anxiety. The first step in treatment is to identify and treat the cause of the pain.

A blockade can be performed routinely or urgently. This is a therapeutic and diagnostic intervention that consists in pain relief by injecting anesthetic and/or steroids into the peripheral nerve, depending on the cause of the pain syndrome, under X-ray control.