Irritable bowel syndrome (IBS)
IBS (irritable bowel syndrome) is a common condition that affects the digestive system. It can cause stomach cramps, bloating and diarrhoea. It’s usually a lifelong condition but lifestyle changes and medicine can help.
If these symptoms are severe, persistent or worsening, seek medical advice promptly.
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On this page
Main symptoms of IBS (irritable bowel syndrome)What can trigger symptoms of IBSOther symptoms of IBS See a GP if: What happens at your GP appointmentTests for IBSWhat happens if you're diagnosed with IBSThings you can do to help with IBS (irritable bowel syndrome)Other ways to help IBS symptoms See a GP if:
IBS (irritable bowel syndrome) is a common condition that affects the digestive system. It can cause stomach cramps, bloating and diarrhoea. It’s usually a lifelong condition but lifestyle changes and medicine can help.
What is IBS (irritable bowel syndrome)
- IBS (irritable bowel syndrome) is a common condition that affects the digestive system.
- It causes symptoms like stomach cramps, bloating, diarrhoea and constipation. These tend to come and go over time, and can last for days, weeks or months at a time.
- It's usually a lifelong problem. It can be very frustrating to live with and can have a big impact on your everyday life.
- Diet changes and medicines can often help control the symptoms.
- The exact cause is unknown – it's been linked to things like food passing through your gut too quickly or too slowly, gastroenteritis, oversensitivity in your gut, stress and a family history of IBS.
Symptoms of IBS (irritable bowel syndrome)
Main symptoms of IBS (irritable bowel syndrome)
The main symptoms of IBS (irritable bowel syndrome) are:
- stomach pain or cramps – usually worse after eating and better after doing a poo
- bloating – your tummy may feel uncomfortably full and swollen
- diarrhoea – you may have watery poo and sometimes need to poo suddenly
- constipation – you may strain when pooing and feel like you cannot empty your bowels fully
There may be days when your symptoms are better and days when they're worse (flare-ups). They may be triggered by food or drink.
What can trigger symptoms of IBS
IBS flare-ups can happen for no obvious reason. Sometimes they have a trigger like:
- alcohol
- caffeine
- certain foods, such as spicy or fatty food
- stress and anxiety
- regular antibiotic use
Other symptoms of IBS
IBS can also cause:
- farting (flatulence)
- pooing mucus
- tiredness and a lack of energy
- feeling sick (nausea)
- backache
- problems peeing, like needing to pee often, sudden urges to pee, and feeling like you cannot fully empty your bladder
- not always being able to control when you poo (bowel incontinence)
See a GP if:
- you think you might have IBS (irritable bowel syndrome) and have had symptoms for over 4 weeks
They can check for IBS and do some tests to rule out other problems.
Getting diagnosed with IBS (irritable bowel syndrome)
What happens at your GP appointment
If the GP thinks you may have IBS (irritable bowel syndrome) they'll ask some questions, such as:
- what symptoms you have
- if they come and go
- how often you get them
- when you get them (for example, after eating certain foods)
- how long you've had them for
The GP may also feel your tummy to check for lumps or swelling.
Before your appointment, it might help to write down details of your symptoms to help you remember them.
Tests for IBS
There's no test for IBS, but you might need some tests to rule out other possible causes of your symptoms.
The GP may arrange:
- a blood test to check for problems like coeliac disease
- tests on a sample of your poo to check for infections and inflammatory bowel disease (IBD)
You will not usually need further tests in hospital unless the GP is not sure what the problem is.
What happens if you're diagnosed with IBS
If the GP thinks you have IBS, they'll talk to you about what it is and what the treatment options are.
It might be difficult to take in everything they tell you.
If you're unsure about something afterwards, write down any questions you have and make another appointment to go over them.
Diet, lifestyle and medicines for IBS (irritable bowel syndrome)
Things you can do to help with IBS (irritable bowel syndrome)
There's no single diet or medicine that works for everyone with IBS (irritable bowel syndrome). But there are things that can help if you have been diagnosed with IBS, to help improve your symptoms or avoid making them worse.
Do
- try to eat a healthy, balanced diet
- keep a diary of what you eat and any symptoms you get – try to avoid things that trigger your IBS
- try to drink at least 8 to 10 drinks of fluid (around 1.5 litres) a day, such as water or non-caffeinated drinks such as herbal tea
- try to find ways to relax
- get plenty of exercise
- try probiotics for a month – they may help any symptoms caused by gut bacteria changes
Don’t
- do not delay or skip meals
- do not eat too quickly
- do not eat lots of fatty, spicy or processed foods
- do not eat more than 3 portions of fresh fruit a day (a portion is 80g)
- do not drink more than 3 cups of tea, coffee or any other caffeinated drink a day
- do not drink lots of alcohol or fizzy drinks
Other ways to help IBS symptoms
How to ease bloating, cramps and farting
To help reduce symptoms like bloating, cramps and farting:
- eat oats (such as porridge) regularly
- eat up to 1 tablespoon of linseeds (whole or ground) a day
- avoid foods that are hard to digest (like cabbage, broccoli, cauliflower, brussels sprouts, beans and onions)
- avoid products containing a sweetener called sorbitol
- ask a pharmacist about medicines that can help, like Buscopan or peppermint oil
How to reduce diarrhoea
To help prevent diarrhoea, you can:
- cut down on high-fibre foods like wholegrain foods (such as brown bread and brown rice), nuts and seeds
- avoid products containing a sweetener called sorbitol
- ask a pharmacist about medicines that can help, like loperamide (Imodium)
If you keep getting diarrhoea, make sure you drink plenty of water to avoid dehydration.
How to relieve constipation
To help ease constipation, you can:
- drink plenty of water to help make your poo softer
- increase how much soluble fibre you eat – good foods include oats, pulses, carrots, peeled potatoes and linseeds (whole or ground)
- ask a pharmacist about medicines that can help (laxatives), like Fybogel
See a GP if:
- diet changes and pharmacy medicines are not helping your IBS symptoms
- you need to avoid lots of different foods to control your IBS symptoms
They may refer you to a dietitian or specialist for advice, and can also suggest other treatments to try.