Back Pain and Nausea: Common Causes, Warning Signs, and What to Do

Back pain and nausea are a symptom combination that can happen for several different reasons. Sometimes the cause is relatively straightforward, like a muscle strain with pain-related nausea or a stomach bug with body aches. But in other cases, the combination can point to kidney stones, kidney infection, gallbladder problems, or another condition that deserves prompt medical attention.

If you are experiencing back pain and nausea right now, try our symptom checker for a personalized assessment.

Common Causes of Back Pain and Nausea

Muscle Strain or Severe Back Spasm

Muscle strain is a common cause of back pain. Severe pain can sometimes trigger nausea, especially if you are tense, not eating normally, or moving less because of discomfort.

Kidney Stones

Kidney stones are a classic cause of back or flank pain with nausea and vomiting. The pain is often severe, wave-like, and may radiate toward the groin.

Kidney Infection

A kidney infection can cause back pain, fever, nausea, urinary symptoms, and feeling generally unwell. This needs medical treatment.

Gastrointestinal Illness

Sometimes nausea starts from a stomach bug, food poisoning, or another digestive issue, while body aches or referred pain make the back hurt as well.

Gallbladder Problems

Gallstones and gallbladder inflammation can cause upper abdominal pain that radiates to the back, often with nausea and vomiting.

Pancreatitis

Pancreatitis can cause upper abdominal pain that radiates to the back, often with nausea and vomiting. This usually needs urgent medical care.

More Serious Causes

Most cases are not emergencies, but some definitely are.

Kidney Infection or Obstruction

Back pain with fever, chills, nausea, or urinary symptoms can suggest a serious urinary tract problem.

Neurological Emergency

If back pain comes with weakness, numbness, loss of bladder control, or trouble walking, urgent evaluation is critical.

Abdominal Emergency

If pain is severe, worsening, or associated with persistent vomiting or abdominal tenderness, an urgent abdominal cause may need to be ruled out.

Red Flags

Get urgent medical help if you have:

• fever with back pain and nausea
• blood in the urine
• persistent vomiting
• severe abdominal pain
• weakness or numbness
• trouble walking
• loss of bladder or bowel control
• pain after injury

What You Can Do at Home

If there are no red flags, it may help to:

• rest and avoid heavy lifting
• drink fluids
• use heat or gentle stretching if it seems muscular
• eat light foods if nauseated
• consider over-the-counter pain relief if appropriate
• monitor for urinary symptoms, fever, or worsening pain

When to See a Doctor

See a doctor if:

• symptoms do not improve
• pain keeps returning
• nausea is prominent or recurrent
• you suspect kidney stones or infection
• symptoms interfere with movement or sleep

Bottom Line

Back pain and nausea together may be caused by muscle strain, kidney stones, kidney infection, digestive illness, gallbladder problems, or pancreatitis. Severe pain, fever, urinary changes, or neurological symptoms should not be ignored.

Use our symptom checker to better understand what might be causing your symptoms and what next step makes sense.

This article is for educational purposes only and does not replace professional medical advice.