The transforaminal epidural injection is a kind of spinal injection that can ease swelling and pain in the spine from various causes. It can also help identify the specific nerve that is causing the pain. The injection goes through a tiny hole in the spinal bone known as a foramen. A steroid drug and sometimes a numbing agent is delivered to the epidural space where a spinal nerve comes out in a transforaminal epidural injection. Lumbar, thoracic, or cervical are the different kinds of transforaminal injections based on the spine area that is treated.