Constipation and bowel changes: what to try and when to seek help
Constipation and bowel changes: check common causes, try safe everyday steps, ask a pharmacist when needed, and recognise urgent warning signs.
How this guide was prepared
Purpose: urgent guidance · Level: detailed
Checked by: Does Your Duck Quack. Sources are linked below; seek professional advice for individual circumstances.
The short answer
What to do first
Constipation and bowel changes: check common causes, try safe everyday steps, ask a pharmacist when needed, and recognise urgent warning signs.
Start here: Record when the problem began, stool changes, straining, pain, bloating, leakage, appetite and blood. Include new medicines and what has been tried. In someone with dementia or communication difficulty, notice reduced eating, restlessness or unusual behaviour. This information can help a pharmacist or GP assess the cause.
Do not wait: Blood in stools, black stools, unexplained weight loss, severe tummy pain, vomiting, or not passing wind or stools needs prompt medical help. Call 999 if the person collapses, is severely unwell or has a life-threatening emergency.
Visual guides
See the decision at a glance
- Bowel patternDate, time, stool consistency, straining, pain and whether passing stool felt complete.
- ContextFood, fluids, movement, medicines, illness and any change from the person’s usual pattern.
- EscalateReport persistent change, blood, vomiting, severe pain, swollen abdomen or inability to pass stool or wind according to urgent advice.
Scope of this guide
This guide helps you understand the options and questions to ask. It is not personal medical, legal or financial advice. Check the official sources for your nation and seek qualified help for high-stakes decisions.
Call 999 for a life-threatening emergency. For an urgent problem that is not clearly life-threatening, use the official NHS urgent-care route for the UK nation you are in. Have the address, symptoms, onset time, medicines and allergies ready.
Who this guide is for
People noticing constipation or a change in bowel habits, and family carers recording symptoms or arranging clinical advice.
A normal bowel pattern differs between people. A change from usual, straining, hard stools, discomfort or incomplete emptying can matter more than a fixed frequency. Illness, less movement, food or fluid changes, medicines and toilet access may contribute. Do not assume a new change is simply ageing or keep increasing laxatives without advice.
What to do now
1. Notice and record the change
Record when the problem began, stool changes, straining, pain, bloating, leakage, appetite and blood. Include new medicines and what has been tried. In someone with dementia or communication difficulty, notice reduced eating, restlessness or unusual behaviour. This information can help a pharmacist or GP assess the cause.
2. Review everyday causes and access
Consider reduced movement, illness, food and fluid intake, medicines, privacy and access to a toilet. Ask a pharmacist or prescriber whether medicine may contribute. If the person has a fluid restriction, follow the clinical plan rather than increasing drinks. Make toileting comfortable, private and unhurried.
3. Choose safe first steps
If suitable, regular meals, fibre-containing foods, advised fluids and gentle activity may support bowel health. Ask a pharmacist whether a laxative is appropriate and how to use it. Seek clinical advice first for severe pain, vomiting, a swollen abdomen, swallowing problems or possible blockage. Do not use someone else’s medicine.
4. Know why bladder or thinking may change
Constipation can cause discomfort and may contribute to urgency or difficulty passing urine. In a person who cannot describe pain, look for appetite or behaviour changes. Sudden confusion has many possible causes and needs prompt assessment; it should not automatically be blamed on constipation or a UTI.
5. Arrange review and act on warning signs
Speak to a pharmacist or GP if constipation persists, returns, follows a medicine change or affects daily life. Seek prompt medical help for blood or black stools, unexplained weight loss, severe tummy pain, vomiting, or inability to pass wind or stools. Collapse or severe illness needs urgent help.
Warning signs and checks
- The person’s usual bowel pattern and current change are recorded.
- Pain, bloating, appetite, blood and leakage are included in the notes.
- Medicines, movement, food, fluids and toilet access are considered.
- Any fluid restriction or swallowing difficulty is discussed before changes.
- A pharmacist or GP has advised on laxatives when needed.
- New confusion or bladder symptoms are assessed rather than assumed.
- Urgent warning signs and the contact route are understood.
Common questions
Can dehydration cause constipation?
Not drinking enough can contribute to hard stools, but it is only one possible cause. Less movement, illness, eating less and some medicines also matter. If a clinician has restricted fluids, do not increase drinks without advice. A pharmacist or GP can help review causes and choose safe next steps.
Can constipation make an older person confused?
Constipation may cause discomfort that is hard to explain, and behaviour or appetite may change. But sudden confusion can have many causes and needs prompt clinical assessment; it does not prove constipation or UTI. Tell the clinician about bowel changes, medicines, fluids and other new symptoms.
When should I ask a pharmacist about constipation?
Ask if constipation is new, persistent, recurring or possibly linked to medicine, or if you are unsure about a laxative. Explain health conditions, medicines, allergies, swallowing problems and any fluid restriction. Severe pain, vomiting, bleeding or inability to pass wind or stools needs urgent medical advice.
When is a bowel change a reason to contact a GP?
Contact a GP if bowel changes persist, recur or affect appetite or daily life. Blood, black stools or unexplained weight loss need prompt advice. Severe pain, vomiting or inability to pass wind or stools can be urgent. A short symptom and medicine record can help the clinician assess the change.
Differences across the UK
Pharmacy, GP, continence and urgent-care routes vary across the four nations. Ask a pharmacist or GP where to seek assessment locally. For urgent advice use NHS 111 in England, NHS 24 on 111 in Scotland, NHS 111 Wales, or GP out-of-hours/Phone First arrangements in Northern Ireland. Call 999 for a life-threatening emergency.
Blood in stools, black stools, unexplained weight loss, severe tummy pain, vomiting, or not passing wind or stools needs prompt medical help. Call 999 if the person collapses, is severely unwell or has a life-threatening emergency.
Primary sources
The publisher checked this guide against the 5 official sources below. This is an editorial source check, not approval by a clinician, lawyer or benefits adviser.
- NHS: Constipation
- NICE CKS: Constipation
- NHS: Dehydration
- NHS: Looking after someone with dementia
- NHS: Sudden confusion
Related guides
- Continence support and products: getting assessed
- Questions to ask at a medication review
- Loss of appetite in older people: eating well with less
- Sudden confusion and delirium: urgent action and support
- Dehydration in older people: signs, drinks and fluid limits
Editorial note: By Does Your Duck Quack.