After an Epidural Steroid Injection: Rest, Sleep, Activity, and Warning Signs

At 9 p.m. on the day of the injection, the leg pain that disappeared on the procedure table is back, and it feels exactly like it did that morning. It is one of the most common calls we get after an epidural steroid injection, and it nearly always has the same answer. The numbing medicine in the injection works within minutes and wears off within hours. The steroid works over days. The gap between them is the first evening.

These are the instructions Dr. Alex Movshis gives patients after a lumbar, cervical or caudal epidural at Modal Pain Management, with the evidence behind each one and an honest note wherever no study exists. If you had your injection somewhere else, the timeline is the same, but follow the discharge instructions your own physician gave you where they differ, especially about blood thinners.

Why the pain can come back the first night, and when worse pain matters

An epidural contains two medicines. The local anesthetic reaches the irritated nerve root right away, which is why many people stand up from the table with no leg pain at all. It lasts a few hours. The steroid, the part meant to calm the inflammation around the nerve, takes days to build. In a study that measured leg pain the day after the injection and again at one week and one month, the authors attributed the day-one improvement mostly to the anesthetic and treated one week as the better first read on the steroid (Ziga 2026).

So the pain returning that evening is not a verdict. Pain that is worse than before the injection is less common. In 16,638 consecutive injections at three academic centers, about 2% of patients reported increased pain afterwards (El-Yahchouchi 2016). The likely causes are soreness where the needle passed through the muscle, and the extra fluid briefly pressing on a nerve root that was already irritated. In a series of 1,035 patients, the 4% who had new or worse neurologic symptoms lasting more than a day had them for a median of three days, and up to 20 (Horlocker 2002).

Here is where we draw the line. Increased soreness that settles over two or three days is expected. Call us if the pain is still climbing after three days. New or worsening weakness, new numbness in the groin, or new trouble controlling the bladder or bowel are not soreness. Those go to the nearest emergency room the same hour, for reasons explained below.

How long to rest, and why bed is the wrong place for it

The rest after an ESI is about the medicine, not the spine. A small needle went through the skin and muscle, and the local anesthetic may have numbed the nerve root it was meant to reach. Both settle within hours. Nothing about the injection needs you to lie still afterwards.

What the evidence does say is that bed rest does not help the problem the injection is treating. Vroomen and colleagues randomized 183 people with sciatica to two weeks of bed rest or to watchful waiting. At two weeks, 70% of the bed-rest group and 65% of the other group had improved, and at twelve weeks the figure was 87% in both groups. Pain, function, time off work and the rate of surgery were no different (Vroomen 1999). The Cochrane review found little or no difference between advice to rest in bed and advice to stay active for sciatica, and a small advantage for staying active in acute low back pain (Dahm 2010).

Our instructions follow from that. Walk around the house the evening of the injection. Take short walks outside the next day. Avoid heavy lifting and strenuous exercise for 48 hours, mainly so that a sore injection site does not get mistaken for a failed injection. Most people go back to desk work the next day. Jobs that involve lifting or long hours on your feet can usually resume after two days.

The best position to sleep after an epidural steroid injection

No study has compared sleeping positions after an ESI, and the injection site does not care how you lie on it. The puncture is tiny. Choose the position that keeps the nerve pain lowest, and the mechanics of the nerve root point to a few that usually help.

• Lumbar injection for sciatica. Lie on your side with a pillow between your knees, or on your back with a pillow under your knees. Bending the hips and knees takes tension off the sciatic nerve and the lower lumbar nerve roots, the same structures stretched by a straight-leg raise.
• Lumbar injection for spinal stenosis. The same positions help for a second reason: bending forward slightly opens the spinal canal, which is why people with stenosis feel better leaning on a shopping cart.
• Cervical injection. A pillow that keeps the neck level with the rest of the spine, neither propped up nor dropped back, and the painful arm supported on a pillow if you sleep on your back.

If you lie awake that first night or two, the steroid may be part of the reason. Sleeplessness, facial flushing and a non-positional headache together make up the “central steroid response”, reported after 2.6% of injections in the large multicenter series (El-Yahchouchi 2016). It passes as the steroid clears.

Driving home, and when you can drive again

You need a driver because the local anesthetic can reach the nerve roots that run the leg or arm. In one study of transforaminal injections with dexamethasone, about one patient in eight had limb numbness or tingling within 30 minutes of the injection (El Abd 2015). It usually wears off within a few hours, but you cannot tell from the car seat whether your foot can brake hard enough. Do not drive for the rest of the day. You can drive the next day once your leg or arm feels and works normally. If numbness or heaviness is still there the next morning, do not drive, and call us.

Showering, heat and ice

No study has tested bathing, heat or ice after an ESI. These instructions come from first principles, and we would rather tell you that than dress them up.

Showering is fine the same evening. Water running over a small puncture for a few minutes does not soak it. Soaking is different. Baths, hot tubs and pools hold water against the skin for a long time, and a needle track leads into deep tissue near the spine. Infection of any kind after an ESI is rare, about 0.13% across the published series, and most of that is not infection near the spine (Santiago 2021), and waiting 24 hours to soak costs you little. Take the bandage off the next morning.

Why no heat after an epidural? The real reason is that skin numbed by the local anesthetic cannot feel a burn, and a heating pad on a numb leg or low back can burn without warning. Once normal feeling has returned, usually by the evening, gentle heat on sore muscles is fine. Ice is the better choice for soreness at the injection site in the first two days, 15 to 20 minutes at a time with a cloth between the ice and the skin.

Exercise, physical therapy and the best exercises after an ESI

Walking is the right exercise from day one. Return to the gym, running and your usual sport after 48 hours, guided by the leg or arm rather than by the calendar. If an exercise brings back the radiating pain, scale it back for another week.

Physical therapy matters more than the timing of your first workout. The injection calms the nerve root. It does not move the disc or strengthen the muscles that protect the spine, so it works best as a window in which rehabilitation becomes possible. The clearest trial evidence comes from the neck. In a multicenter randomized trial of 169 patients with cervical radicular pain, the primary outcome, arm pain at one month, did not differ between the three groups. But at three months, 57% of patients treated with both injections and conservative care (medication and physical therapy) had a positive outcome, against 37% with injections alone and 27% with conservative care alone (Cohen 2014). The Medicare coverage policy that applies in New York expects an ESI to be paired with active rehabilitation or a home exercise program (CMS L39036).

The best exercises after an ESI are the ones your physical therapist chose for your diagnosis. If you do not have a therapist yet, ask us for a referral at your follow-up. Resume a program you already have after 48 hours.

Steroid side effects in the first week

The steroid in an epidural is a single dose, similar to or smaller than a short course of steroid pills, and some of it reaches the bloodstream. These effects are common enough to expect and fade on their own.

Facial flushing. Redness and warmth of the face and chest, sometimes for a day or two. How often it happens depends on the steroid and the dose. Rates range from 1.5% in a series of 825 patients given dexamethasone (Kang 2019) to 28% in a series given dexamethasone 16 mg, in which every case resolved within 48 hours (Kim CH 2010).

Blood sugar in people with diabetes. This is the side effect most worth planning for. In 30 patients with diabetes, blood sugar rose by an average of 126 mg/dL after an ESI, and the rise faded by half each day, returning to the usual range within about two days (Even 2012). Higher steroid doses keep it up longer. With triamcinolone 40 mg, fasting glucose stayed raised for three days, and post-meal glucose stayed high from the day of the injection through day three at either 20 or 40 mg (Kim WH 2013). Check your blood sugar more often than usual for three to four days, and call your diabetes doctor if readings run well above your usual range or above the number you have been told to act on.

Sleep and mood. A night or two of poor sleep, or feeling wired, is part of the central steroid response described above.

Menstrual changes. In a Kaiser Permanente cohort of 6,926 women without a hysterectomy, 2.5% of injections were followed by a visit for abnormal vaginal bleeding within 60 days, 2.8 times the rate before the injection. Biopsies were benign in every premenopausal woman who had one (Suh-Burgmann 2013). An early or heavier period after an ESI is usually just that. Bleeding after menopause always needs a check with your gynecologist, whatever the timing.

Your body’s own cortisol. A single epidural dose can temporarily quiet the adrenal glands. After methylprednisolone acetate 80 mg, cortisol was suppressed for a median of 14 days and was back to normal in most patients by four weeks (Abdul 2017). In a large trial, methylprednisolone and triamcinolone lowered cortisol at three weeks, while betamethasone and dexamethasone did not differ from an injection with no steroid at all (Friedly 2018). This rarely matters in daily life. It does matter if you need surgery or become seriously ill in the following month, so tell your surgeon and anesthesiologist about the injection.

Headache after an epidural steroid injection

There are two kinds, and the difference is posture.

A non-positional headache in the first day or two, the same whether you sit, stand or lie down, is usually part of the steroid response. Acetaminophen or ibuprofen and fluids are enough.

A positional headache is the one to call us about. If the headache is clearly worse when you sit up or stand and eases within minutes of lying flat, sometimes with neck stiffness, ringing in the ears or nausea, the needle may have punctured the dura, the membrane around the spinal fluid. This followed 0.2% of interlaminar injections and 0.04% of transforaminal injections in the multicenter series (El-Yahchouchi 2016). The current multisociety consensus guideline recommends staying hydrated and taking regular acetaminophen and anti-inflammatories, allows caffeine in the first day, advises against routine bed rest, and considers an epidural blood patch when the headache does not respond and interferes with daily life (Uppal 2023). It is treatable, and you should not wait it out alone. A severe headache with fever, or a sudden, explosive headache, goes to the emergency room.

Restarting blood thinners

Restart any blood thinner on the schedule you were given at discharge, not on a general rule from the internet. Epidural steroid injections are classed as intermediate-risk procedures in the multisociety guideline on interventional pain procedures in patients on antiplatelet and anticoagulant drugs, and the safe restart time depends on the drug, the dose and why you take it (Narouze 2018). That is why this page gives no drug-by-drug timings. If you are not sure when to restart, call us before you take the next dose. Bleeding into the spinal canal after an ESI is extraordinarily rare. None was found in 16,638 injections in one multicenter series (El-Yahchouchi 2016), and there was no clinically significant bleeding in a larger dataset of 26,061 interventional pain procedures from the same centers (Carr 2016). The restart schedule is part of what keeps it that way.

When to go to the emergency room

Serious complications after an ESI are rare, which is exactly why patients should know what they look like. Two groups of symptoms matter.

Symptoms of pressure on the spinal cord or nerve roots. New weakness in a leg or arm, or weakness that is getting worse, new numbness in the groin or inner thighs, or new loss of bladder or bowel control can signal bleeding or infection in the spinal canal. Bleeding usually shows itself within the first few days, particularly after a blood thinner is restarted. Infection can take days to a few weeks to appear, usually with fever and back or neck pain that gets worse instead of better.

Symptoms the FDA lists. In 2014 the FDA required a warning on injectable corticosteroids that epidural injection may cause rare but serious events, including loss of vision, stroke, paralysis and death, and advised patients to seek emergency care for vision changes, tingling in the arms or legs, sudden weakness or numbness of the face, arm or leg, dizziness, severe headache, or seizures (FDA 2014).

For any of these, call 911 or go to the nearest emergency room. Do not call the office first. Tell the emergency team that you had an epidural steroid injection and on what date.

Judging whether it worked, and what happens next

Give it two to four weeks. The landmark trials judged the result at three weeks (Carette 1997), one month (Ghahreman 2010) and six weeks (Friedly 2014), and the first evening and first few days are too early. Relief that is clearly there at one week is encouraging. Its absence at one week is not a verdict, which is why we do not judge the injection before the follow-up visit.

What to note for your follow-up visit:

• the share of your familiar pain that is gone, as a rough percentage
• how far you can walk, how long you can sit, and what you could not do before that you can do now
• when relief started, and if it faded, when

Those numbers decide the next step. Repeat injections are reasonable when the first one gave real relief that has since worn off. The Medicare coverage policy that applies in New York treats at least 50% improvement in pain, or in the ability to do the movements that hurt, lasting at least three months as the threshold for a repeat. When the first injection did not help, it allows a repeat after 14 days using a different approach, level or medication if appropriate, and it caps ESIs at four sessions per spinal region in a rolling year (CMS L39036). Repeating the same injection that did nothing is a different matter. In the LESS trial of 400 older adults with spinal stenosis, further injections of either kind added nothing long term when the first six weeks had not helped (Friedly 2017).

The epidural steroid injection page explains who benefits most and what the evidence shows condition by condition.

If the injection did not help: what that usually means

A well-placed epidural that changes nothing is diagnostic information, whoever performed it. These are the patterns we see most often when patients come in for a second opinion after an ESI elsewhere. Bring your MRI and the procedure note.

The leg pain eased but the low back still aches, worse leaning back, twisting or standing up from a chair

Usually: Facet joint pain, which an epidural does not treat

At Modal Pain: Diagnostic medial branch block, then radiofrequency ablation if it works

Pain in one buttock below the belt line, worse sitting or getting out of a car, rarely below the knee

Usually: Sacroiliac joint pain

At Modal Pain: Image-guided SI joint injection

Groin or front-of-thigh pain, worse walking or putting on socks

Usually: Hip joint pain that mimics a pinched nerve

At Modal Pain: Image-guided hip joint injection

Deep buttock pain when sitting that runs down the back of the thigh, with an MRI that does not explain it

Usually: Deep gluteal syndrome or piriformis syndrome

At Modal Pain: Ultrasound-guided nerve block

Leg pain along one nerve that got better for weeks and then came back

Usually: Radicular pain that responded, which is the case for a repeat injection

At Modal Pain: Repeat epidural, sometimes at a different level or by a different route

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References

Every figure on this page comes from the sources below. Where no study exists, the page says so and explains the reasoning instead.

1. Vroomen PC, de Krom MC, Wilmink JT, et al. Lack of effectiveness of bed rest for sciatica. N Engl J Med. 1999. doi:10.1056/NEJM199902113400602 · PubMed
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4. Ziga M, Stienen MN, Zeitlberger AM, et al. Early assessment of physical capacity and pain is associated with 1-month response following epidural steroid injection in patients with sciatica due to degenerative lumbar disorders. Brain Spine. 2026. doi:10.1016/j.bas.2026.106111 · PubMed
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18. U.S. Food and Drug Administration. FDA Drug Safety Communication: FDA requires label changes to warn of rare but serious neurologic problems after epidural corticosteroid injections for pain. FDA Drug Safety Communication. 2014. Source
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These are general instructions after a epidural steroid injection. If the instructions you were given at discharge differ, follow the ones you were given, because they account for your medications and your procedure. For anything you are unsure about, call (646) 290-6660. See the epidural steroid injection page for how the procedure works and who it helps, or the aftercare instructions for other procedures.