Constipation Symptoms

Quick Glance: Common Constipation Symptoms

Constipation can affect how often stools are passed, their consistency, and how difficult they are to pass.

Common constipation symptoms include:

• Fewer bowel movements than usual

• Hard, dry or lumpy stools

• Straining while passing stools

• Pain or difficulty during a bowel movement

• Feeling that the bowel has not emptied completely

• A sensation that stool is blocked in the rectum

• Abdominal bloating or discomfort

• Spending a long time trying to pass stool

Some people may have fewer than three bowel movements in a week, but bowel frequency differs from person to person. Hard stools, excessive straining and difficulty emptying the bowel are therefore also important when recognising constipation.

Constipation Symptoms That Should Not Be Ignored

Most cases of constipation settle without serious problems. However, new, persistent or unusual symptoms may indicate a complication or another digestive condition that needs assessment.

The table below lists constipation-related symptoms that should not be ignored:

These symptoms do not necessarily indicate a serious condition, but new or persistent changes should be medically assessed rather than attributed to constipation without evaluation.

Why Do Constipation Symptoms Occur?

Constipation symptoms occur because stool moves through or leaves the digestive tract less effectively than usual. When stool remains in the colon for longer, more water is absorbed from it. This can make the stool harder, drier and more difficult to pass.

Normal bowel movements also depend on coordinated activity between the colon, rectum, anal muscles, pelvic floor and nervous system. If movement through the colon is slow or the pelvic floor muscles do not relax properly during a bowel movement, a person may need to strain or may feel that stool remains trapped despite trying to empty the bowel.

Diet, inadequate fluid intake, reduced physical activity, changes in routine, and repeatedly ignoring the urge to pass stool can also contribute to constipation symptoms. Certain medicines can also slow bowel movement or make stools harder.

Constipation may also occur during pregnancy or in medical conditions affecting metabolism, hormones, nerves, or the digestive system. The underlying mechanism, therefore, differs between people even though the resulting symptoms may be similar.

Constipation Symptoms That Require Immediate Medical Attention

Ordinary constipation does not usually cause a medical emergency. Severe or suddenly developing symptoms may instead indicate bowel obstruction, significant bleeding or another acute abdominal condition.

It is recommended to seek medical attention if constipation occurs with:

• Severe or constant abdominal pain

• A markedly swollen or distended abdomen

• Inability to pass both stool and gas

• Repeated or persistent vomiting

• Heavy rectal bleeding

• Black, tarry stools

• Fainting or severe weakness with bleeding

• Fever with severe or worsening abdominal symptoms

Constipation accompanied by severe abdominal pain, vomiting, abdominal swelling and an inability to pass stool or gas can indicate intestinal obstruction and requires prompt assessment.

Symptoms of Constipation Based on Type

Constipation can develop through different patterns of bowel dysfunction, depending on how stool moves through the colon and how effectively it is passed.

The table below describes the main constipation patterns and their typical symptoms:

Symptoms of Constipation-Specific Conditions

Certain conditions can produce constipation alongside additional symptoms that help distinguish their clinical pattern.

The table below describes important constipation-related conditions and their typical symptoms:

Symptoms of Constipation in Children

Constipation in children commonly causes hard or painful stools, but younger children may show behavioural changes rather than clearly explaining what they feel.

Common symptoms of constipation in children include:

• Infrequent bowel movements

• Hard, dry or unusually large stools

• Pain while passing stools

• Abdominal pain or bloating

• Avoiding or delaying bowel movements

• Reduced appetite

• Irritability around toilet time

• Stool leakage or soiling after prolonged stool retention

Stool-withholding behaviour is particularly important in younger children. A child may stiffen their body, cross their legs, stand on tiptoes, or hide when they feel the urge to pass stool. These behaviours may look like straining even though the child is actually trying to avoid a painful bowel movement.

Prolonged stool retention can also allow softer stool to leak around the retained stool, causing soiling that may be mistaken for diarrhoea.

Persistent constipation, significant abdominal swelling, repeated vomiting, poor growth or blood in the stool warrants medical assessment.

Can You Have Constipation Without Symptoms?

No, because constipation is defined by changes in bowel habits, stool consistency, or difficulty passing stool. However, constipation does not always cause abdominal pain or obvious discomfort.

Some people may notice only that their stools have become harder, bowel movements occur less often or they need to strain more. Others mainly experience incomplete emptying or a sensation of blockage.

A person can also pass stool regularly and still have constipation if stools are consistently hard, difficult to pass or incompletely evacuated. Bowel frequency alone, therefore, does not determine whether constipation is present.

When Can Constipation Symptoms Become Life-Threatening?

Constipation itself is not a life-threatening condition. However, severe stool retention or another condition causing constipation can occasionally lead to complications that need urgent treatment.

The table below lists severe symptoms associated with constipation and explains why they can be serious:

How are Constipation Symptoms Diagnosed?

Constipation is usually assessed first through the person's symptoms, bowel habits, medical history and physical examination. Doctors may ask about stool frequency and consistency, straining, incomplete emptying, diet, medicines and how long the symptoms have been present.

The table below explains the assessments that may be used for constipation and their purpose: