Pain on One Side Symptoms, Causes & Common Questions

Understand pain on one side symptoms, including 8 causes & common questions.

  1. 8 Possible Pain On One Side Causes
  2. Real-Life Stories
  3. Questions Your Doctor May Ask
  4. Statistics
  5. Related Articles

8 Possible Pain On One Side Causes

The list below shows results from the use of our quiz by Buoy users who experienced pain on one side. This list does not constitute medical advice and may not accurately represent what you have.

Kidney stone

A kidney stone is a stone made up of various possible materials that forms in the kidneys. Factors that increase the risk of forming kidney stones include high levels of calcium, uric acid, and oxalate in the urine, low levels of citrate in the urine, abnormal urine pH, low urine volume, certain urin...

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Kidney infection (pyelonephritis)

A kidney infection, or pyelonephritis, is actually a type of urinary tract infection (UTI) that begins in the urethra or bladder and spreads to the kidneys.

The infection is caused by bacteria that either travel into the urethra or spread from an infection elsewhere in the body.

Women, especially pregnant women, are most susceptible. Anyone who has had a urinary tract blockage, or uses a catheter, or has a weakened immune system is also at risk for a kidney infection.

Symptoms include fever; chills; back and abdominal pain; and frequent, painful urination. If there is also nausea and vomiting and discolored, foul-smelling urine, take the patient to the emergency room or call 9-1-1.

Left untreated, pyelonephritis can cause permanent damage to the kidneys. Bacteria can also enter the bloodstream and cause a life-threatening infection elsewhere in the body.

Diagnosis is made through urine test, blood test, and sometimes imaging such as ultrasound, CT scan, or x-ray.

Treatment includes antibiotics and sometimes hospitalization.

Rarity: Uncommon

Top Symptoms: abdominal pain (stomach ache), nausea, pelvis pain, back pain, vomiting

Symptoms that never occur with kidney infection (pyelonephritis): mid back pain from an injury

Urgency: Hospital emergency room

Urinary tract infection

A urinary tract infection is an infection of the urinary tract, which includes the kidneys, bladder, and urethra. Urinary tract infections are usually caused by infections by fecal bacteria.

Symptoms of urinary tract infections include pain with urination (dysuria), ...

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Ovarian cancer

Ovarian cancer is an abnormal growth of cells in the ovaries, the reproductive organ in women responsible for producing eggs. Risk factors for developing ovarian cancer include familial genetic syndromes, increasing age, obesity or weight gain, starting menses at an early age, undergoing menopa...

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Pain On One Side Symptom Checker

Take a quiz to find out what might be causing your pain on one side

Iga nephropathy

IgA nephropathy is a disease in which immunoglobulin A (IgA) — a form of antibody normally found mostly on mucous membranes, such as lining the mouth and intestines — deposits in the kidneys, causing kidney damage. The kidneys are then less able to filter waste from the blood.

Symptoms incl...

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Abdominal aortic aneurism

The aorta is the main blood vessel to everything below the neck. Weaknesses can happen within the wall of the aorta, which balloons out due to the pressure of the blood pushing against it.

Rarity: Rare

Top Symptoms: lower back pain, side pain, general abdominal pain, abdominal pain that shoots to the back, abdominal bump

Urgency: Hospital emergency room

Ovarian torsion

Ovarian torsion, also called adnexal torsion or tubo-ovarian torsion, is the twisting of the "stem," or supporting fleshy pedicle, of the ovary.

This condition can occur when a mass forms on the surface of the ovary and pulls it over. This is most often a complication of cystic ovaries.

It is most common in women under thirty or past menopause. It can occur during pregnancy.

Symptoms include severe, one-sided, lower abdominal pain with nausea and vomiting.

Diagnosis is made by ultrasound. The ovary will appear enlarged due to the torsion cutting off the circulation. There will be free pelvic fluid and a twisted pedicle.

Ovarian torsion is a medical emergency. The ovary can die due to loss of circulation, causing infection, abscess, or peritonitis. Surgery must be done to prevent tissue death and subsequent complications. In the majority of cases the affected ovary must be removed, which also removes the cyst or mass that caused the torsion.

Proper treatment of polycystic ovary syndrome (PCOS) can help prevent at least one cause of ovarian torsion.

Rarity: Rare

Top Symptoms: abdominal pain (stomach ache), nausea or vomiting, nausea, moderate abdominal pain, loss of appetite

Symptoms that never occur with ovarian torsion: diarrhea, pain below the ribs, mild abdominal pain

Urgency: Hospital emergency room

Alport syndrome

Alport syndrome is an inherited genetic condition caused by a mutation in one of the genes that produces collagen, a building block of the body.

Alport syndrome can cause kidney problems, hearing loss, and eye pain and vision problems. It is also sometimes associated with certain types of ...

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Real-life Stories

Once your story is reviewed and approved by our editors, it will live on Buoy as a helpful resource for anyone who may be dealing with something similar. If you want to learn more, try Buoy Assistant.

Questions Your Doctor May Ask About Pain On One Side

To diagnose this condition, your doctor would likely ask the following questions:

  • Have you noticed any changes in the color of your urine recently?
  • Do you feel pain when you urinate?
  • Any fever today or during the last week?
  • Have you experienced any nausea?

If you've answered yes to one or more of these questions

Pain On One Side Symptom Checker

Take a quiz to find out what might be causing your pain on one side

Pain On One Side Symptom Checker Statistics

People who have experienced pain on one side have also experienced:

  • 4% Nausea
  • 4% Lower Back Pain
  • 4% Side Pain

People who have experienced pain on one side were most often matched with:

  • 42% Kidney Stone
  • 42% Kidney Infection (Pyelonephritis)
  • 14% Urinary Tract Infection

People who have experienced pain on one side had symptoms persist for:

  • 38% Less than a day
  • 30% Less than a week
  • 16% Over a month

Source: Aggregated and anonymized results from Buoy Assistant (a.k.a. the quiz).

Pain On One Side Symptom Checker

Take a quiz to find out what might be causing your pain on one side

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