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Left Lower Quadrant Pain

Left Lower Quadrant Pain

Left lower quadrant (LLQ) pain is tummy (abdominal) pain that is mainly in the lower half on the left hand side.  It is sometimes also called left iliac fossa (LIF) pain, although this really means pain in a smaller area in the lower left corner of your tummy (abdomen).

Where is my left lower quadrant?

The left lower quadrant (LLQ) is a section of your tummy (abdomen). Look down at your tummy (abdomen) and mentally divide the area from the bottom of your ribs down to your pubic hair into four quarters. The quarter on your left side below your belly button (umbilicus) is your LLQ.

Right and Left Upper Quadrants

By Blausen.com staff (2014). “Medical gallery of Blausen Medical 2014”. WikiJournal of Medicine 1 (2). DOI:10.15347/wjm/2014.010. ISSN 2002-4436.

What is in my left lower quadrant?

Right and Left Upper Quadrant Organs

By Mariana Ruiz Villarreal, modified by Madhero88 [Public domain], via Wikimedia Commons

  • Small bowel (ileum).
  • Parts of your large bowel (colon) - transverse colon, descending colon and sigmoid colon.
  • Your rectum
  • Left ureter (at the back of the other organs).
  • Left ovary and Fallopian tube.

And don't forget the skin and nerves of that area.

What might give me pain there?

There are a lot of possible causes for pain in the LLQ area. LLQ pain is the most common place to get bad tummy (abdominal) pain in adults. (Children are more likely to get pain in the right lower quadrant.)

The pain can come from any of the organs mentioned above, and indeed these are the source for the most common causes. But the human body is never simple, so pain can come from other areas of your body. This is called 'referred' pain. So this rather widens the possible options. Pain in this area can vary from minor niggles to excruciating, life-threatening problems.

Some of the more common possibilities are:

To be honest, this list barely scratches the surface, but you can read more about the most common causes of LLQ pain in adults, in children and in pregnancy.

You can also read about other less common causes.

Should I see a doctor?

Yes, if you have a pain which doesn't settle, you will probably need to see a health professional to help you figure out the cause. See a doctor urgently if you:

  • Have very severe pain.
  • Have persistent sickness (vomiting).
  • Have recently lost weight without trying to do so.
  • Have persistent diarrhoea.
  • Feel giddy, light-headed, faint or breathless.
  • Are bringing up blood or have blood in your poo (faeces).
  • Have a change from your usual bowel habit. This means you may open your bowels more or less often than usual, causing bouts of diarrhoea or constipation.
  • Could be pregnant.

How will they find the cause of the pain?

The doctor will be able to get a reasonable idea of the reason for the pain by asking you some questions and examining you. They may want to test a sample of your urine. You may then have to have further tests, depending on their suspicions at this stage. These may be done urgently or in due course, again depending on their suspicions and how much pain you are in. Possible tests might include blood tests, and ultrasound scan, an X-ray, a look into your bowel with a camera (colonoscopy) and other scans and 'scopes'.

Find out more about the tests which may be involved in the diagnosis of LLQ pain.

How will it be treated?

This will be entirely dependent on the cause. Once your doctor has worked this out, they can discuss the options with you.

Discover more about the treatment for some of the common causes of LLQ pain.

What are the most common causes of left lower quadrant pain?

The list of causes of left lower quadrant (LLQ) pain is almost endless but the following are some of the more common possibilities, not in order of how common they are:

What are the gut problems that can cause left lower quadrant pain?

All sorts of common and uncommon problems to do with your guts can give you pain in this area. For example:


  • If your guts are full of poo (faeces) this can cause discomfort anywhere in your tummy (abdomen).
  • You will normally be aware that you are not opening your bowels as often as usual.
  • Your poo will be hard and pellet-like.

See separate leaflet called Constipation in Adults for more information.

Gastroenteritis and food poisoning

  • Cause diarrhoea.
  • May also make you sick (vomit).
  • Pain may be anywhere in the tummy (abdomen).
  • Pain may ease for a while each time some diarrhoea is passed.

See separate leaflets called Gastroenteritis in Adults and Food Poisoning in Adults for more information.

Irritable bowel syndrome (IBS)

  • Very common.
  • Tends to cause crampy tummy (abdominal) pains.
  • Often causes bloating.
  • It comes and goes and may be associated with diarrhoea and/or constipation.

See separate leaflet called Irritable Bowel Syndrome for more information.


  • This is an inflammation of a pouch or pouches which people who have diverticular disease have in their guts.
  • Diverticulitis in the last part of the large gut (sigmoid colon) is the most common cause of LLQ pain in adults.
  • Diverticulitis in other parts of the colon can also cause pain in the LLQ.
  • It usually comes with a temperature (fever) and a change in bowel habit (opening your bowels more or less often than usual for you).

See separate leaflet called Diverticula (including Diverticulosis, Diverticular Disease and Diverticulitis) for more information.

Colon cancer and rectal cancer

Severe LLQ pain, bloating, and not being able to open your bowels at all, not even to pass wind (flatus), are symptoms that suggest you may have a colon cancer that is blocking your bowel. You should seek urgent medical advice.
  • Colon cancer and rectal cancer (sometimes called colorectal cancer) are two of the most common cancers in the UK (in contrast, cancer of the small intestine is rare).
  • Although colon cancer can affect any part of the large bowel (colon), it commonly affects the last part (descending colon and sigmoid colon) which is on the left-hand side. Rectal cancer affects the very last part of the large bowel (rectum) just before it ends at the anus.
  • There is usually a change in how often you need to open your bowels and you may notice that you have lost weight, without trying.
  • You may get a feeling of not fully emptying your bottom (rectum) after opening your bowels.

See separate leaflet called Colon Cancer and Rectal Cancer for more information.

Trapped inguinal or femoral hernia

  • A left inguinal or femoral hernia happens when a piece of bowel or other tissue from inside the tummy pushes through a weakness in the muscles of the tummy (abdominal) wall near the left groin.
  • It can happen on either side.
  • If whatever has pushed through gets stuck and can't slide back inside the tummy, it is trapped (incarcerated).
  • If it happens on the left-hand side, there will be a tender swelling in the left groin.
  • It causes pain in the groin and in the tummy, usually on the side of the hernia but it may cause pain over the whole tummy.
  • It is common to be sick (vomit).

See separate leaflet called Hernia for more information.

What is a common kidney problem that can cause left lower quadrant pain?

Kidney infection

  • A kidney infection can cause pain anywhere along your urinary tract. So this could be anywhere from the loin in your back, round the side and down to the LLQ.
  • You may notice that it hurts when you pass urine and that you need to pass urine more often.
  • You may have a temperature (fever)

See separate leaflet called Kidney Infection (Pyelonephritis) for more information.

What are the problems that only women get that can cause left lower quadrant pain?


  • Pain at the time that you release an egg (ovulation), which is usually about halfway between two periods.
  • Can be very severe and stop you short but usually eases over several minutes.
  • Will only be felt on one side but can be left or right.

Pelvic inflammatory disease

  • Pain is usually on both sides but may just be in the LLQ.
  • Pain is worse during sex.
  • There is abnormal bleeding, so bleeding not just at period time but in between periods and often after sex.
  • There is usually a vaginal discharge, which may be smelly.

See separate leaflet called Pelvic Inflammatory Disease for more information.

Twisted ovary

  • Twisted ovary (ovarian torsion) usually only occurs if a fluid-filled sac (cyst) has developed on the left ovary.
  • Pain can be constant or intermittent.

See separate leaflet called Ovarian Cyst for more information.


  • Sometimes endometriosis can cause constant lower tummy pain, though usually it is worse just before, during and for a short while after a period.
  • Pain is usually across the lower part of the tummy but it can be just on the left side.

See separate leaflet called Endometriosis for more information.

Ectopic pregnancy

You should always see a doctor urgently if you think you might be pregnant and are experiencing left lower quadrant pain. You could have an ectopic pregnancy.

See section on causes in pregnancy.

What are the problems that only men get that can cause left lower quadrant pain?

Any pain coming from the left side of the scrotum can cause pain in the LLQ but usually the pain in the scrotum will be worse.

Torsion of the testicle

  • Torsion of the testicle (testis) causes severe pain in the scrotum and severe lower quadrant pain.
  • It most commonly affects teenage boys but young adult men can be affected.
  • It is unusual over the age of 25 years but can affect any man at any age.
  • The testicle is very tender.
  • You should seek urgent medical advice.

See separate leaflet called Torsion of the Testis for more information.


  • Epididymo-orchitis is an inflammation of the testicle and/or the tubes surrounding it (epididymis).
  • It is caused by a germ (infection).
  • The affected side of the scrotum swells and goes very red and tender.

See separate leaflet called Epididymo-orchitis for more information.

What are the other possible causes?

Inflammatory bowel disease

Crohn's disease and ulcerative colitis are forms of inflammatory bowel disease (IBD). IBD is not to be confused with irritable bowel syndrome (IBS) which is very different). These conditions cause the lining of the gut to become inflamed.  Diarrhoea (sometimes with blood mixed in) is usually the main symptom.

  • Crohn's disease: 
    • Any part of the gut can be affected and the pain depends on which part is affected.

See separate leaflet called Crohn's Disease for more information.

  • Ulcerative colitis:
    • Diarrhoea is often mixed with mucus or pus.
    • Blood mixed with the diarrhoea is common.
    • The tummy pain is typically crampy.
    • A feeling of wanting to go to the toilet but with nothing to pass (tenesmus) is also common.

See separate leaflet called Ulcerative Colitis for more information.

Sigmoid volvulus

  • Sigmoid volvulus happens when the very last part of the large bowel, the sigmoid, twists on itself causing a blockage.
  • Causes colicky pain and a very bloated tummy (abdomen)
  • The people it affects are usually elderly and have often had long-term problems with constipation.
  • It is dangerous and requires emergency surgery.

Kidney stones

  • Kidney stones are hard stones that can form in the kidney, in the tube (the ureter) draining urine from the kidney, or in the bladder.
  • A stone that passes into the tube (the ureter) draining urine from your left kidney may cause pain that starts in your left loin and spreads (radiates) to your groin and left lower quadrant (LLQ), or into your testicle (testis) if you are a man.
  • You may notice blood in your pee.

See separate leaflet called Kidney Stones for more information.


  • In some cases you may have pain from shingles before a blistery rash appears.
  • Pain tends to be sharp or burning.
  • You may not feel quite yourself.
  • The tummy is a common place for shingles rash.

See separate leaflet called Shingles (Herpes Zoster) for more information.

Abdominal aortic aneurysm

  • An abdominal aortic aneurysm is a swelling of the largest blood vessel in the body (the aorta) inside the abdomen.
  • It doesn't usually cause any symptoms but can occasionally cause pain before it bursts. The pain is usually felt in your back or the side of your tummy (abdomen) but it can occasionally be felt in the left lower (or right) quadrant.

See separate leaflet called Abdominal Aortic Aneurysm for more information.

What else could it be?

These lists of possible causes for LLQ are by no means exhaustive and there are many other conditions that can cause pain in the LLQ. Problems in your spine or back could be 'referred'. Referred pain in this situation means that it is coming from your back but you are feeling it around the front. Muscular pulls and sprains can also affect you in the tummy area. If this is the case, moving the particular muscle would make the pain worse, whereas if you were to lie completely still, it wouldn't hurt.

What are the most common causes of left lower quadrant pain in pregnancy?

Any of the other conditions already mentioned can cause pain in the left lower quadrant (LLQ) whether you are pregnant or not, so you should always get checked out.


  • Constipation is very common in pregnancy.
  • It gives you crampy lower tummy (lower abdominal) pains, often in the LLQ.
  • You will open your bowels less often than you usually do and typically you pass hard, pellet-like stools (faeces).

Pelvic ligament pain

  • Typically it starts around 14 weeks and goes on into late pregnancy.
  • It is due to the growing womb (uterus) pulling on the structures (round ligaments and broad ligament) which hold it in place.
  • Usually causes a stabbing pain down one or both sides of the tummy (abdomen) and sometimes down into the hips and genital area.
  • Pain can be quite marked.

You can read more about this in the separate leaflet called Common Problems in Pregnancy.

Urine infection

  • Urine infection is more common in pregnancy.
  • Usual symptoms are of pain when you pass urine and passing urine more often.
  • You may also get tummy pain and a high temperature (fever) and notice blood in your pee.
  • If you do get pain, it's usually across the lower tummy but can be on one side if you are developing a kidney infection (pyelonephritis).

See separate leaflet called Urine Infection in Pregnancy for more information.

Ectopic pregnancy

You should always see a doctor urgently if you think you might be pregnant and are experiencing LLQ pain. You could have an ectopic pregnancy.
  • An ectopic pregnancy is a pregnancy that is not in the normal place.
  • Pain is often sudden and can be severe, but it can come on over a few days.
  • You may have missed your period but you can still have an ectopic pregnancy even if you think you have had a period.
  • Vaginal bleeding often happens but not always.
  • Occasionally you can get pain over the tip of your shoulder.

See separate leaflet called Ectopic Pregnancy for more information.

Left lower quadrant pain in later pregnancy

In later pregnancy, LLQ pain can be caused by a placental abruption or by going into labour. Placental abruption happens when there is bleeding between the afterbirth (placenta) and the lining of the womb. Labour is too soon (premature labour) if it happens before 37 weeks.

See separate leaflets called Premature Labour and Pelvic Pain in Women for more information.

What are the most common causes of left lower quadrant pain in children?

In young children it is often quite difficult for them to show exactly where the pain is. If this is the case, the field of options widens to almost any cause of tummy ache (abdominal pain). In children common causes of left lower quadrant (LLQ) pain include:


  • Very common in children.
  • Means passing hard stools (faeces), with difficulty, less often than normal.
  • Commonly causes pain on the left, over the last part of the colon (descending colon).

See separate leaflet called Constipation in Children for more information.

Gastroenteritis and food poisoning

  • Cause diarrhoea.
  • May also cause the child to be sick (vomit) and have crampy tummy (abdominal) pains.
  • Pain may be anywhere in the tummy.
  • Pain may ease for a while each time some diarrhoea is passed.

See separate leaflets called Gastroenteritis in Children and Food Poisoning in Children for more information.

Lactose intolerance

  • Leads to bloating, tummy pain, wind and watery stools after drinking milk.
  • Lactose intolerance can sometimes occur for a while after gastroenteritis. The condition gets better when the infection is over and the gut lining heals.
  • Some people are born with a tendency to develop it.

See separate leaflet called Lactose Intolerance for more information.

Mesenteric adenitis

  • In children with infections such as colds, glands within the tummy commonly become inflamed giving them tummy ache.
  • The child may have other symptoms of a cold, such as a runny nose or a sore throat.

See separate leaflet called Mesenteric Adenitis for more information.

Torsion of the testicle

  • Occurs when a testicle (testis) twists around in the scrotum.
  • It occurs in boys and young men, typically teenage boys.
  • It is unusual over the age of 25 years.
  • Severe pain develops quickly.
  • It can affect either side.

See separate leaflet called Torsion of the Testis for more information.

Coeliac disease

  • Coeliac disease is caused by a reaction of the gut to gluten. Gluten is found in many foods.
  • it can cause poor growth
  • Stools may be pale, smelly and difficult to flush away.
  • Pain doesn't always occur but can be anywhere in the tummy. It tends to come and go.

See separate leaflet called Coeliac Disease for more information.

What are the usual tests for left lower quadrant pain?

Your doctor will narrow the (enormous) field of possible left lower quadrant (LLQ) pain diagnoses by talking to you and examining you. They may be able to find the cause simply by doing so. For example, if they find the typical rash of shingles, you will need no further tests to find the cause. The doctor will certainly need to feel your tummy (abdomen) in the area you have the pain, but may also need to examine other parts too, such as the rest of your tummy. Your doctor may also need to examine your bottom (rectal examination).

You will probably be asked to provide a sample of urine, to rule out kidney problems.

You may well have to go for blood tests. These might include tests to:

  • Check the function of your liver and kidneys.
  • Rule out any inflammation or infection in your body.
  • Look for anaemia.
  • Check your sugar level.

What other tests might be needed for left lower quadrant pain?

Next it will depend on what the examination and the tests above have suggested. In some cases no further tests will be needed - if, for example, your doctor is confident you have constipation or shingles.

If a problem with your large bowel is suspected, you may need an examination with a tube with a camera put into your large bowel (a colonoscopy). A computerised tomography (CT) scan or an ultrasound scan may be helpful to look for diverticula and to look at your kidneys. These tests are also used in women to look at the ovary and tubes. In some cases an X-ray of the tummy may be useful. Further tests include other 'scopes' (such as a sigmoidoscopy), a barium enema and other scans (such as a magnetic resonance imaging (MRI) scan).

If it is thought you might have an ectopic pregnancy - women - or a torsion of your testicle (testis) - men, you may only have one or two of these tests before having emergency surgery to treat your problem.

Nobody will need all these tests, and some people may not need any.

What treatment will I need for left lower quadrant pain?

There is no single answer to this until you know what the cause of your pain is. See the relevant leaflet for the condition with which you have been diagnosed. Treatments for a few of the causes of left lower quadrant (LLQ) pain are briefly discussed below.

  • Constipation can be treated with medicines, but often changes to your diet are needed to prevent it happening again.
  • Gastroenteritis usually doesn't need any treatment, other than drinking plenty of fluid to compensate for all that is being lost. Occasionally when germs (bacteria) which can be treated with antibiotics are causing the infection, an antibiotic may help.
  • Shingles. The pain and rash settle on their own in time, but some people may be advised to take an antiviral tablet to help speed this process up.
  • Kidney infections are treated with antibiotics. Mild infections can be treated with antibiotics at home. If you are very unwell you may need admission to hospital for antibiotics and fluids through a drip (intravenously).
  • Kidney stones. Small kidney stones pass on their own eventually, in which case you will need to drink plenty of fluids and take strong painkillers. Larger kidney stones may need one of a number of procedures done to break them up or remove them altogether.
  • Torsion of the testicle (testis) is cured with an operation (ideally this should be performed within 6-8 hours of the pain starting).
  • Ectopic pregnancy is usually treated by an operation but medical treatment is now more common. This avoids the need for surgery and means the tube is less likely to be permanently damaged.

What is the outlook?

Again this depends entirely on the cause of the pain. Some conditions settle very quickly on their own (for example, gastroenteritis), or with the help of antibiotics (for example, a kidney infection). Others can be cured with surgery, such as torsion of the testis. Some are long-term conditions, for which there is no cure, although there are treatments, such as those used for people who have Crohn's disease. Your doctor should be able to give you an idea of the outlook (prognosis) once a diagnosis has become clear.

Further reading & references

  • Cartwright SL, Knudson MP; Evaluation of acute abdominal pain in adults. Am Fam Physician. 2008 Apr 1;77(7):971-8.
  • Kim JS; Acute Abdominal Pain in Children. Pediatr Gastroenterol Hepatol Nutr. 2013 Dec;16(4):219-224. Epub 2013 Dec 31.
  • Cartwright SL, Knudson MP; Diagnostic imaging of acute abdominal pain in adults. Am Fam Physician. 2015 Apr 1;91(7):452-9.
  • Manterola C, Vial M, Moraga J, et al; Analgesia in patients with acute abdominal pain. Cochrane Database Syst Rev. 2011 Jan 19;(1):CD005660. doi: 10.1002/14651858.CD005660.pub3.

Disclaimer: This article is for information only and should not be used for the diagnosis or treatment of medical conditions. Patient Platform Limited has used all reasonable care in compiling the information but makes no warranty as to its accuracy. Consult a doctor or other healthcare professional for diagnosis and treatment of medical conditions. For details see our conditions.

Dr Jacqueline Payne
Peer Reviewer:
Dr Helen Huins
Document ID:
29451 (v1)
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