CONSTIPATION IN CHILDREN.

Your heart goes out to a child with severe constipation. It needs aggressive treatment.

childhood constipation doctor brisbane

When does Constipation in Children usually start?

Constipation is an important kids’s health issue & often causes real misery for families.

Constipation commonly starts around potty training. Discomfort of bowel evacation leads to avoidance which, in turn, leads to retention and larger/harder bowel motions so causing more discomfort, and so on. This is called “functional constipation.” Constipation is also quite common in infants at weaning. Constipation can also start in a child starting school because they don’t want to poo in the school toilets.

Most kids with constipation do not have any underlying disease. Hirschsprung’s disease occurs when part of the nervous system to the bowel has not developed fully. This occurs in around 1 in 5000 newborns and leads to constipation from early in childhood. The first poo in a baby is called meconium, and babies with hirschprung’s disease will often not pass meconium within the first 48 hours of birth. More rarely, the condition can present in an infant or young child¹ – it doesn’t always present in babies but usually does.

What can I do to help?

Regular toileting – make use of the “gastrocolic reflex” whereby there is a tendency to want to go to the toilet after a meal – so sit the child on the toilet after meals. If the child is old enough to understand rewards then explain that you will reward your child by sitting on the toilet. You can praise your child for actually pooing but the key is reward the process (sitting on the toilet) rather than the “result”. You might want to use stars or another reward system. Be consistent with the rewards. It is important not to punish the child for accidents.

Water requirements for childhood constipation

Age 1-3 years 1300ml/day, 4-8 years 1700ml/day

Food, milk and childhood constipation

Try to maintain an adequate fibre intake (fruit, vegetables, high-fibre bread, baked beans, wholegrain breakfast cerials). Processed bran may cause bloating.

Avoid punishing your child for episodes of incontinence. Rewarding your child for targeted behaviours is helpful. What behaviours might you target?

It’s really important that your child tries to sit for 3-5 minutes on the toilet 20 to 30 minutes after a main meal. During this time, they try to “push out a poo.”

toilet positioning of child with constipation

Back Straight, Knees above hips, feet on stool.

The position of the child on the toilet is important – leaning forwards, knees above the hip level, and feet flat on a foot stool or pile of magazines/books.

You can also reward checking the underwear, drinking enough, and/or taking required laxatives. But start with sitting on the toilet.

How might you do this? Firstly, let your child know that you are going to them for sitting on the toilet for 5 minutes. Dig out the sticker chart. Agree a prize in advance. When they reach a certain number of stickers (or stars for older kids) they get the  prize. You know your child best. Examples of prizes include watching a favourite TV program, playing a computer game, or visiting a park.

Constipation starting in babies may possibly be caused by cows milk allergy, or allergy to soy milk. This is an area of controversy but your GP may suggest a careful dietary withdrawal followed by a re-challenge.

What can The GP do to help?

Movicol Junior (or Movicol half) is licensed for children 2 years or older (although it is also often used in younger children). The maintenance dose for a child age 1 to 6 is 1 sachet per day adjusted to produce regular soft stools (max 4 sachets daily). This is an “osmotic laxative” and is very safe and well tolerated.

There is also a “disempaction” dose of gradually increasing doses over a week (up to 8 sachets), followed by the longer term maintenance dose. Disempaction can take longer than you think – up to two weeks. The maintenance dose should be continued for several weeks after establishing a regular bowel habit. It’s best not to stop medication abruptly but gradually reduce the dose over a period of a few months in response to stool consistency and frequency. Some children may require laxatives for several years.

trial of a combined laxative treatment for paediatric disempaction was published in 2015 in The Journal of Paediatrics & Child Health. The regimen combines movicol with Dulcolax SP.

Sometimes it may be necessary to add or switch to another type of laxative (a stimulant and/or lactulose). Stimulants laxatives include bisacodyl & senokot (both are only available in tablet form) and is added to movicol if needed. Lactulose liquid is considered if the bowel motions are hard.

In some families, constipation is an ongoing problem and very difficult to treat. A certain amount of trial and error may be required and occasionally, a referral to a paediatric gastroenterologist will be necessary.

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WRITTEN BY: Dr Richard Beatty
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