Arachnoiditis is the name for inflammation of the arachnoid layer of the meninges, a lining that covers the brain and spinal cord. This condition can happen after surgery, spine injury, or infection. Any time the meninges is punctured, even for medical procedures such as injections and spinal taps, the risks of arachnoiditis increase.

There are no good treatments for arachnoiditis. The pain can be managed, but the condition is never really cured. Some people find effective methods to handle their pain, but others find that the problem gets worse over time.