How long do back spasms last?

Cleveland Clinic says spasms from overusing the back may last a few days, and several weeks if a muscle is strained. MedlinePlus notes that most people with back pain improve or recover within 4 to 6 weeks, often much sooner.

Should I rest in bed with a back spasm?

Cleveland Clinic says bed rest is no longer recommended. MedlinePlus advises cutting back on activity only for the first couple of days, then gradually returning to your usual activities.

Is heat or ice better for back spasms?

Both are used. MedlinePlus suggests ice for the first 48 to 72 hours and then heat. Cleveland Clinic advises wrapping either one in a towel and applying it for 20 to 30 minutes.

When is a back spasm an emergency?

Cleveland Clinic advises going to the emergency department if you also have loss of bladder or bowel control, weakness, or numbness or tingling on one side of your body; seeing a provider right away for loss of balance or coordination; and calling 911 if the pain stops you moving. The NHS treats a loss of feeling around the genitals or anus as an emergency.

Which specialist treats back spasms?

Cleveland Clinic says you can see your primary healthcare provider, who can recommend at-home treatments and refer you to physical therapy. MedlinePlus notes that a few visits to someone who does spinal manipulation (a chiropractor, osteopathic doctor or physical therapist) sometimes helps back pain. You can find chiropractors and physical therapists near you in the SpinalCare directory.

A person pressing a hand against their lower back

Spine condition · plain-English guide

Back spasms

Photo: Kindel Media / Pexels

A back spasm is a sudden, involuntary tightening of the back muscles, from a tiny twinge to a contraction strong enough to stop you moving. Cleveland Clinic says spasms from overusing the back may last a few days, or several weeks if a muscle is strained, and that bed rest is no longer recommended.

Overview

A back spasm happens when back muscles suddenly tighten against your will. It can be a small twinge or a contraction strong enough to stop you moving, and it is most common in the lower back (Cleveland Clinic).

Cleveland Clinic describes back spasms as a common type of back pain. Around 80% of people in the US have back pain at some point, and it lists athletes, people who do heavy lifting and people with other back problems as more likely to get spasms.

Cleveland Clinic says back spasms can go away on their own, depending on the cause, but may come back. Spasms from overusing the back may last a few days, or several weeks if a muscle is strained, and MedlinePlus notes that most people with back pain improve or recover within 4 to 6 weeks, often much sooner.

Common symptoms

A sudden tightening, twinge or seizing of the back muscles
Anything from a dull ache or twitch to sharp pain that makes it hard to move
Pain that can spread into the hips or legs

Common causes

Overuse: athletes and people who do heavy lifting may get back spasms, and these activities can cause a muscle strain (Cleveland Clinic)
Underuse: long periods of sitting, poor posture and little exercise can leave back and stomach muscles weak
Too little water, potassium or calcium in your diet
Stress and anxiety, which can tense the muscles
An injury, such as a fall or car accident
Sometimes a serious condition: Cleveland Clinic lists examples including epidural abscess, gallstones, ankylosing spondylitis, kidney stones, kidney infection and tumour

Warning signs to act on

The sources list these as warning signs. Each one says what the source advises: some are emergencies (in the US, call 911 or go to the emergency room), others mean contacting a clinician promptly.

Loss of bladder or bowel control, weakness, or numbness or tingling on one side of your body: Cleveland Clinic advises going to the emergency department
Pain so bad you cannot move: Cleveland Clinic advises calling 911
Pain, tingling, weakness or numbness in both legs, or a loss of feeling around your genitals or anus: the NHS treats these as emergencies
Back pain with chest pain: the NHS treats this as an emergency, and Cleveland Clinic says to always go to the emergency room for chest pain
Loss of balance and coordination, or loss of feeling in a limb: Cleveland Clinic advises seeing a healthcare provider right away

What usually helps

Staying gently active

Cleveland Clinic says bed rest is no longer recommended. The NHS advises staying active and not staying in bed for long periods. MedlinePlus says that if there is no sign of a serious cause, you should cut back only for the first couple of days and then stay as active as possible.

Heat or ice

Cleveland Clinic suggests ice or heat wrapped in a towel for 20 to 30 minutes at a time. The NHS notes that a heat pack can help relieve muscle spasms.

Over-the-counter pain relief

Cleveland Clinic and the NHS list anti-inflammatory painkillers such as ibuprofen. They are not suitable for everyone, so the NHS suggests checking with a pharmacist or GP if you're unsure which painkiller is suitable.

Physical therapy

A clinician may refer you to physical therapy to learn stretches and relaxation techniques for the back muscles, and may prescribe a short course of a muscle relaxant (Cleveland Clinic).

Watch: a physical therapist explains

What To Do About Back Spasms?
Bob & Brad · Physical therapists Bob Schrupp, PT and Brad Heineck, PT
Two licensed physical therapists talk through what helps when a back spasm hits. We embed it for general education; it is not a substitute for a personal assessment.

Frequently asked

How long do back spasms last?: Cleveland Clinic says spasms from overusing the back may last a few days, and several weeks if a muscle is strained. MedlinePlus notes that most people with back pain improve or recover within 4 to 6 weeks, often much sooner.
Should I rest in bed with a back spasm?: Cleveland Clinic says bed rest is no longer recommended. MedlinePlus advises cutting back on activity only for the first couple of days, then gradually returning to your usual activities.
Is heat or ice better for back spasms?: Both are used. MedlinePlus suggests ice for the first 48 to 72 hours and then heat. Cleveland Clinic advises wrapping either one in a towel and applying it for 20 to 30 minutes.
When is a back spasm an emergency?: Cleveland Clinic advises going to the emergency department if you also have loss of bladder or bowel control, weakness, or numbness or tingling on one side of your body; seeing a provider right away for loss of balance or coordination; and calling 911 if the pain stops you moving. The NHS treats a loss of feeling around the genitals or anus as an emergency.
Which specialist treats back spasms?: Cleveland Clinic says you can see your primary healthcare provider, who can recommend at-home treatments and refer you to physical therapy. MedlinePlus notes that a few visits to someone who does spinal manipulation (a chiropractor, osteopathic doctor or physical therapist) sometimes helps back pain. You can find chiropractors and physical therapists near you in the SpinalCare directory.

Sources

This page organises information from the cited sources for general education. It is not medical advice and has not been reviewed by a clinician. Always consult a qualified clinician about your own care. Editorially reviewed October 4, 2026.