All about ESI
Epidural Steroid Injections:
Your Questions Answered
Back pain that radiates down the leg can disrupt every part of daily
life. It is often caused by a herniated disc pressing on a nerve root, or
by inflammation of the nerve root itself. When medication and physical
therapy are not enough, an epidural steroid injection offers another
option — delivering anti-inflammatory medication directly to the source
of the pain. This article collects the questions our patients ask most.
What can this procedure do?
The steroid injected into the epidural space — the space surrounding
the nerve roots — reduces inflammation and swelling of the compressed
nerve. Radiating pain, numbness, and tingling along the nerve typically
improve. Many patients can then return to physical therapy, exercise, and
daily activities — which is a key goal of treatment, because better
movement is the foundation of long-term recovery.
Frequently asked questions
Q: Does it hurt?
A: The physician always numbs the skin with local anesthetic first.
Most patients feel only pressure or a dull sensation during the
injection — usually much less uncomfortable than they feared. Our team
stays with you, talking you through the procedure the whole time.
Q: Do I need to stay in hospital?
A: Generally, no. The procedure takes about 15–30 minutes, followed by
30–60 minutes of observation, and you go home the same day. Please bring
a companion and do not drive yourself home that day.
Q: When will it work, and how long does it last?
A: The local anesthetic in the mixture may reduce pain immediately for
a few hours. The steroid’s effect then begins within 2–7 days. Relief
typically lasts from several weeks to several months, varying between
individuals depending on the cause and severity of the condition. Your
physician will always schedule a follow-up to assess the result and plan
the next step.
Q: How many times can it be repeated? Is repeating it dangerous?
A: The procedure can be repeated when indicated, but not too
frequently. Physicians space injections appropriately and limit the
number per year for safety, because steroid effects can accumulate. The
decision to repeat is based primarily on how well the previous injection
worked.
Q: I have diabetes. Can I have this injection?
A: Yes, but tell your physician in advance. Steroids can temporarily
raise blood sugar for about 1–3 days. Your physician will advise you on
monitoring and adjustments during that period.
Q: I take a blood thinner. What should I do?
A: Do not stop the medication on your own. Bring your
full medication list to the pre-procedure assessment. Your pain physician
will decide, together with your prescribing physician, whether the
medication needs to be paused, and for how long, safely.
Q: If the injection doesn’t help, does that mean nothing can be done?
A: No. How you respond to the injection is itself valuable diagnostic
information. If the result is not as expected, your physician will review
the cause of your pain and consider other options — a different
procedure, medication adjustment, or surgical consultation when
indicated. In pain medicine, there are always further options.
Preparation checklist for the day
- Bring your complete medication list and report any allergies
- Eat normally unless instructed otherwise
- Bring a companion; do not drive yourself home
- If you feel unwell or have a fever before your appointment,
call the clinic to reschedule
diagnosis or advice. Every decision about a procedure should follow an
assessment and discussion with your treating physician.
Wondering whether this procedure is right for you?
Make an appointment for an assessment by our specialist team.
