Intense pain in the injured area, which can include the lower back, legs, buttocks, or feet. The pain may feel like an electric shock or a burning sensation. It can spread across your back and down your legs. The pain may get worse when you move.
Numbness, tingling, or a pins-and-needles feeling
Crawling sensation on the skin, as if ants are walking up and down your back
Muscle cramps or spasms
Weakness
Trouble walking
Severe headaches
Vision problems
Hearing problems
Dizziness
Nausea
Bladder or bowel problems
Trouble sleeping
Fatigue
Joint pain
Loss of balance
Sexual dysfunction
Depression
Ringing in the ears (tinnitus)
Inability to sweat normally (anhidrosis)
In the most severe cases, the legs can become paralyzed
The symptoms I would get rid of first would be the intense pain, the crawling sensation and the bladder and bowel problems.