Can Cortisone Injections Cause Insomnia? | What To Expect

Yes, a steroid shot can disturb sleep for a night or two, though this side effect is usually brief and not everyone gets it.

Cortisone injections are often pitched as local treatment. That’s mostly true. The medicine is placed into a joint, around a tendon, or near an irritated area to calm swelling and pain. Still, a small amount can reach the bloodstream. When that happens, some people feel wired, flushed, restless, or wide awake at bedtime.

If you had a shot and then spent half the night staring at the ceiling, you’re not making it up. Sleep trouble after a steroid injection is a known short-term side effect. The good news is that it usually fades fast. The less good news is that the first night can feel rough, especially if your shot was later in the day, your dose was on the higher side, or you’re already a light sleeper.

This article breaks down when insomnia can happen, how long it tends to last, what makes it more likely, and when a sleepless night points to a bigger issue.

When A Cortisone Shot Can Mess With Sleep

A cortisone shot can affect sleep because corticosteroids can act on more than the sore spot that got injected. Even though the goal is local relief, some of the drug may circulate through the body for a short time. That can leave you feeling alert at the wrong hour, a bit jittery, warm in the face, or just unable to settle.

The pattern is usually pretty recognizable. You feel fine right after the visit. Then that evening, or later that night, you notice you’re tired but not sleepy. Some people drift off and wake up again at 2 a.m. Others can’t fall asleep at all. If insomnia is tied to the injection, it often shows up within the first day or two.

That short timing matters. Joint pain itself can ruin sleep. So can stress about the procedure, caffeine, missed routines, or a late-day local anesthetic wearing off. The clue is the sudden “switched on” feeling that starts soon after the shot and eases fairly quickly.

Why The Body Reacts This Way

Corticosteroids are related to cortisol, one of the body’s own hormones. Cortisol follows a daily rhythm and tends to be higher earlier in the day. When extra steroid is added, even from an injection, it can nudge that rhythm off track for a bit. That’s one reason some people feel more alert than usual after treatment.

The reaction is not always dramatic. It may be mild restlessness, shorter sleep, or lighter sleep with more wake-ups. In some people, it’s paired with facial flushing or a “buzzed” feeling. Hospital for Special Surgery notes that steroid-containing injections can cause insomnia for a night or two, along with flushing or feeling jittery. The HSS trigger point injection guidance spells that out plainly.

Taking An Injection And Losing Sleep: What Raises The Odds

Not every cortisone shot leads to insomnia. Plenty of people sleep fine after one. Still, a few patterns show up again and again.

• Time of day: A late afternoon or evening shot may be rougher on sleep than an earlier appointment.
• Dose and type: Higher steroid exposure can raise the chance of whole-body side effects.
• Injection site: Some shots, such as spinal or larger joint injections, may be more likely to produce noticeable whole-body effects in some patients.
• Repeat treatment: People getting repeated steroid treatment may notice side effects more clearly.
• Sleep sensitivity: If caffeine, pain, stress, or schedule changes already throw off your sleep, a shot may push you over the edge.
• Other steroid use: Tablets, inhalers, or creams used at the same time can add to total steroid exposure.

There’s another wrinkle. Pain relief itself can change how your evening feels. You may move more, stay up later, or notice your body revving down more slowly because the ache that usually tires you out is gone. That doesn’t mean the shot failed. It just means the night after an injection is not always a normal night.

NHS guidance on steroid injections notes that difficulty sleeping can happen when steroid treatment reaches the blood, and it says this side effect should get better on its own. You can read that in the NHS steroid injections advice.

What The First Few Days Usually Feel Like

The first 24 to 72 hours are the stretch when most side effects show up. Sleep trouble is only one part of the picture. Some people also get a pain flare, a hot face, headache, or mild mood changes. That mix can make the night feel longer than it needs to.

Most of these effects are temporary. If your sleep was knocked off by the steroid itself, the problem often settles within one to three nights. A week of poor sleep is less common and deserves a closer look at the full picture, including pain, blood sugar swings, caffeine, and other medicines.

What You Notice	When It Tends To Start	What It Often Means
Trouble falling asleep	Same day or first night	Short-term steroid effect or restlessness after the procedure
Waking in the middle of the night	First 1 to 2 nights	Lighter sleep linked to steroid exposure or pain flare
Feeling jittery or wired	Within hours	Whole-body reaction to the steroid reaching circulation
Facial flushing	Within hours to 1 day	Known brief side effect that can come with sleep trouble
Higher blood sugar in diabetes	First 1 to 3 days	Common steroid response that can also disturb sleep
More pain right after the shot	First 24 to 48 hours	Post-injection flare rather than treatment failure
Sleep back to normal	By day 2 or 3	Typical course for brief injection-related insomnia
Insomnia lasting beyond several days	After day 3	Worth checking with your prescriber, especially if paired with other symptoms

Can Cortisone Injections Cause Insomnia? When It’s More Than One Bad Night

Most post-shot insomnia is short and mild. Still, there are times when the pattern deserves a phone call. If you’re sleeping badly for several nights in a row, feel unusually agitated, or notice your heart racing, don’t brush it off. The same goes for marked swelling, fever, worsening redness at the injection site, or severe pain that keeps climbing instead of easing.

People with diabetes should pay close attention after a steroid shot. Steroids can raise blood sugar, and high readings can make sleep worse all by themselves. Arthritis Foundation notes that insomnia is a common corticosteroid side effect and also flags broad medication interactions with steroids. Their corticosteroid side-effect page is a useful reference.

If you have bipolar disorder, a past steroid reaction, or a pattern of strong mood changes with medicines, mention that before the injection. Steroids can affect mood and energy, not just sleep. That does not mean you can’t have the shot. It means the plan should fit your history.

Signs That Deserve Faster Medical Advice

• Fever, chills, or spreading redness after the injection
• Severe pain that gets worse instead of easing
• Shortness of breath, chest pain, or fainting
• Marked confusion, intense agitation, or behavior that feels far out of character
• Blood sugar readings that are much higher than your usual range

What You Can Do The Night After The Shot

You usually don’t need a big fix. A few simple moves can make the first night easier.

1. Keep caffeine low. Coffee at 4 p.m. plus a steroid shot is a lousy combo for sleep.
2. Stick to a plain evening. Dim lights, light food, and a steady bedtime beat “I’ll just power through.”
3. Don’t chase the lost sleep too hard. A long late nap can drag the problem into the next night.
4. Watch your blood sugar if you have diabetes. A high reading may be part of why you feel restless.
5. Use your post-procedure instructions. If you were told to rest the joint, follow that plan.

It also helps to set expectations before the shot. If you already know the first night may be patchy, it feels less alarming when it happens. That alone can cut some of the bedtime spiraling.

Situation	Best Next Step	When To Check In
One restless night after the injection	Keep the evening low-stimulation and give it a day or two	No urgent call needed if you otherwise feel well
Two to three poor nights, but no other symptoms	Review caffeine, pain, and other medicines	Call if it keeps going
Diabetes with high readings after the shot	Follow your sick-day or glucose plan from your care team	Check in sooner if numbers stay high
Sleep trouble plus severe agitation or racing heart	Get medical advice promptly	Same day
Redness, heat, fever, or worsening pain at the site	Rule out infection or another complication	Same day

How Long Does Injection-Related Insomnia Last?

For most people, it’s brief. Think one night, sometimes two, and now and then a bit longer. The shortest version is a “wired” evening followed by a normal next night. The longer version is a few days of broken sleep that slowly settles as the steroid effect eases.

If your sleep is still off after several days, it’s worth stepping back. Was the injection done to treat shoulder or back pain that still hurts at night? Did you stop a pain medicine before the procedure? Are you using decongestants, stimulants, or extra caffeine? The shot may have started the problem, but another factor may be keeping it alive.

What This Means Before Your Next Shot

If a prior cortisone injection kept you awake, tell the clinician before the next one. That detail can shape timing, dose choice, and aftercare advice. An earlier appointment may suit you better. Your clinician may also review whether the expected pain relief still outweighs a rough night or two of sleep.

That kind of tradeoff is personal. For some people, a short burst of insomnia is worth it if knee pain finally calms down. For others, even one lost night is a big deal. Neither reaction is wrong.

The plain answer is this: yes, cortisone injections can cause insomnia, usually because a small amount of steroid affects the body outside the injection site. In most cases the sleep loss is short-lived, annoying rather than dangerous, and easier to handle once you know what’s going on.