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Constipation and back pain can share causes and call for different care

Constipation and back pain are both common, and both often improve with simple steps at home [1][2]. A few warning signs, such as losing control of your bladder or bowels, need emergency care [2].

By the editorial team. Published 8 November 2026. Sources checked November 2026. Educational information, not medical advice.

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Key points

  • Back pain usually improves within a few weeks, and constipation can often be treated with diet and lifestyle changes [1][2].
  • Inactivity, certain medicines and conditions that affect the spine can be tied to constipation or back pain [1][2][3].
  • Back pain that gets worse when you poop is a reason to get checked [2].
  • Loss of bladder or bowel control, numbness around the genitals or anus, or numbness or weakness in both legs needs emergency care [2].
  • Rectal bleeding, constant abdominal pain or weight loss you cannot explain, along with constipation, means seeing a doctor right away [3].

Constipation and back pain can overlap for practical reasons

Both problems are common, and both often get better without complicated treatment [1][2]. Back pain, especially in the lower back, usually improves within a few weeks, though it can last longer or keep coming back [2]. Constipation affects people of all ages and can usually be treated with changes to diet and daily habits [1].

Several everyday factors can touch both problems [1][2][3]:

  • Sitting or lying down for long periods can contribute to constipation, and staying in bed for long stretches is not advised for back pain [1][2].
  • Some medicines can cause constipation, including opioid painkillers, and painkillers may be prescribed when back pain is severe [1][2].
  • Conditions that affect the brain and spine can cause constipation, and back pain has its own spine-related causes such as a slipped disc [2][3].

Constipation is also more common during pregnancy, after giving birth and in people over 65 [1].

When to get care

Back pain with numbness or lost bowel control needs emergency care

Very rarely, back pain is a sign of a serious problem such as a broken bone, cancer or an infection [2]. Get emergency care if your back pain comes with any of these signs [2]:

  • Pain, tingling, weakness or numbness in both legs [2].
  • Loss of feeling around your genitals or anus [2].
  • Changes in your bladder or bowels, such as trouble urinating, or urinating or having a bowel movement without meaning to [2].
  • Changes in how your genitals feel during sex, trouble getting or keeping an erection, or not being able to orgasm [2].
  • Pain that started after a serious accident, such as a car crash [2].

If you need the emergency room, do not drive yourself. Ask someone to drive you or call for an ambulance [2].

Get prompt medical attention if your back pain comes with these signs [2]:

  • Feeling hot, cold, shivery or generally unwell along with back pain [2].
  • Severe pain that starts suddenly or is getting worse quickly [2].

Constipation has its own warning signs. See a doctor right away if you are constipated and have bleeding from your rectum, constant pain in your abdomen, or weight loss you cannot explain [3].

If you think you may have a medical emergency in the United States, call 911 or go to the nearest emergency room.

Constipation causes straining and a feeling that your bowels are not empty

Straining or pain when you pass stool is one of the main signs of constipation [1][3]. These are the usual signs [1][3][4]:

  • Fewer than three bowel movements a week, or going less often than usual [1][3][4].
  • Stool that is hard, dry or lumpy, or unusually large or small [1][3].
  • Stool that is difficult or painful to pass [3].
  • A feeling that you have not fully emptied your bowels [1][3].

You do not need a bowel movement every day. A change in your usual bowel habits is the thing to pay attention to [4].

Long-term constipation can lead to fecal impaction, where stool builds up in the rectum, the last part of the large intestine [1]. The main symptom is watery stool leaking around the hard stool. A healthcare professional may need to remove some of the stool, and you should not try that yourself [1].

Medicines and inactivity and spine conditions link constipation and back pain

Factors that can matter for constipation, back pain or both
FactorConstipationBack pain
Not moving enoughLong periods of sitting or lying down can cause it [1][3].Staying in bed for long periods is not advised [2].
MedicinesOpioid painkillers, some antacids and some antidepressants can make it worse [1][3].Painkillers may be prescribed if pain is severe [2].
Spine and nervous systemSpinal cord or brain injuries and Parkinson's disease can cause it [3].A slipped disc is one possible cause [2].
Ignoring the urgePutting off a bowel movement can bring it on [1][3].Not listed as a cause [2].

If you take a medicine that may be causing constipation, ask your provider about it [4]. Talk to a doctor before you stop any prescribed medicine [1].

Diet and fluids and gentle movement can ease constipation and back pain

You may notice a difference in constipation within a few days, though it sometimes takes a few weeks [1]. These steps are safe to try during pregnancy [1].

  1. Eat more fruits, vegetables and grains, which are high in fiber [4]. Apples, apricots, grapes, raisins, raspberries and strawberries contain sorbitol, which can help soften stool [1].
  2. Drink plenty of water and other fluids, and avoid alcohol [1].
  3. Add wheat bran, oats or flaxseed to your diet [1].
  4. Go at a regular time and place, give yourself plenty of time, and do not put it off when you feel the urge [1].
  5. Rest your feet on a low stool and raise your knees above your hips if you can [1].
  6. Fit in a daily walk or run, which can help you go more regularly [1].

If diet and lifestyle changes are not helping, talk to a pharmacist [1]. Laxatives help you go more regularly, most work within 3 days, and they should only be used for a short time [1]. Use them only if your provider says you should [4].

For back pain, staying active is also part of the advice [2]:

  • Keep up your daily activities as much as you can, and do not stay in bed for long periods [2].
  • Use an ice pack wrapped in a cloth to reduce pain and swelling, or a heat pack wrapped in a cloth to ease stiffness or muscle spasms [2].
  • Try back exercises and stretches, and stop if your pain gets worse [2].
  • Walking, swimming, yoga and pilates may also ease back pain [2].
  • Ask a pharmacist which painkiller is suitable for you if you are unsure [2].

A doctor can check constipation or back pain that does not improve

See a doctor about back pain in these situations [2]:

  • It does not improve after a few weeks of home care [2].
  • It stops you doing your day-to-day activities, or you are struggling to cope [2].
  • It does not improve with rest, or it is worse at night [2].
  • It is worse when you sneeze, cough or poop [2].
  • You notice a lump or swelling in your back, or your back has changed shape [2].
  • It comes from the top of your back, between your shoulders, rather than the lower back [2].

See a doctor about constipation if your symptoms do not go away with self-care or you have a family history of colon or rectal cancer [3]. Also get checked if you feel tired all the time, notice sudden changes in your bowel habits, or take a medicine that may be causing it [1].

If back pain does not get better after a few weeks, other options may include manual therapy from a trained therapist [2]. Physical therapy may be available without a referral in some areas [2].

Sources

  1. Constipation nhs.uk
  2. Back pain nhs.uk
  3. Symptoms & Causes of Constipation niddk.nih.gov
  4. Constipation medlineplus.gov

Not medical advice. This page is general education written from the sources above. It cannot diagnose a condition or replace a licensed clinician who knows your history. If you may be having an emergency, call your local emergency number or go to the nearest emergency department.