Medical Oncologist
CION Cancer Clinics
A bowel symptom diary to take to your appointment | CION Cancer Clinics
A bowel symptom diary is a simple daily record of your stools, any blood, pain, food and weight, kept until your appointment. Most bowel changes have ordinary causes such as food, infection, irritable bowel or piles, and a diary helps the doctor see which pattern you have. This page gives you the headings to print or copy, and tells you when to stop writing and see a doctor today. At CION Cancer Clinics, our specialists help you judge which bowel symptoms need tests and plan screening that fits your risk.
NG
Medically reviewed by Dr. Naresh GunduConsultant Medical Oncologist · MBBS, DNB (Internal Medicine), DM (Medical Oncology, AIIMS) · last reviewed October 2026, next review due October 2027
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The short answer
Why keep a diary of your bowel symptoms?
Because it turns a vague worry into a clear pattern a doctor can act on. Most changes in the bowel come from ordinary things: a change in food, an infection, irritable bowel, piles, a new medicine or stress. A diary helps the doctor tell those apart from the smaller number of changes that need a colonoscopy.
Memory is a poor witness
In a short appointment, most people say "it has been going on for a while" and cannot remember whether the blood came before or after the pain. Embarrassment makes it harder, especially when describing stools to a doctor you have never met. Written notes say it for you. You can simply hand the page across the desk.
Who keeps it
Often it is a son, daughter or daughter-in-law keeping notes for a parent who would rather not talk about it. That works well, as long as the person with the symptoms agrees and the entries describe what was seen, not what anyone guesses it means. Write in Telugu or English, whichever is quicker.
A diary makes the appointment more useful. It is never a reason to delay booking one.What a pattern can show
What can a symptom diary help the doctor see?
Most patterns point to something common and treatable. The diary's job is to show which pattern you have.
Symptoms that follow food
Bloating, cramps and loose motions after milk, very spicy meals or heavy fried food usually point to irritable bowel or a food intolerance. When symptoms rise and fall with what you ate, the diary makes the link obvious.
Write down
- What you ate at each meal
- Tea, coffee, milk and curd
- Anything eaten outside home
Bleeding with hard stools
Bright red blood on the paper after straining is most often piles or a small tear called a fissure. Noting whether the stool was hard, and whether passing it hurt, helps the doctor judge this. It still needs an examination to be sure.
A short burst that settles
Diarrhoea for a few days after travel, a wedding feast or a stomach bug, which then settles on its own, is usually an infection. The diary shows that it came, went and did not return.
A change that does not go away
Looser or more frequent stools, new constipation, blood mixed into the stool or steady weight loss over several weeks is the pattern doctors want to investigate. It still usually has a benign cause, but it needs tests rather than more waiting. See when a change in bowel habit matters.
This pattern is the reason to book now, diary or not.Not sure whether this applies to you?
Ask an oncologistThe diary itself
What should each day's entry include?
Print this page, or copy these headings into a notebook or your phone notes, one entry per day. A tick or a few words is enough.
- Date and number of visits
- How many times you opened your bowels, roughly when, and whether any visits were at night.
- What the stool looked like
- Hard pellets, normal, soft, loose or watery. Note if it was unusually thin, pale, very dark or black.
- Blood and mucus
- None, on the paper only, on the surface or mixed in. Bright red or dark. Any clear or white jelly-like mucus.
- Pain, bloating and wind
- Where it was, how strong out of ten, and whether opening your bowels eased it.
- Food, drink and medicines
- Main meals, milk products, alcohol and any new tablet, including iron, painkillers, antibiotics and laxatives.
- Energy and weight
- Tiredness, breathlessness on stairs and appetite. Weigh yourself once a week on the same scale.
!
Stop writing and go to an emergency department today if
You are passing a lot of blood or clots, the stool is black and tarry, you feel faint or dizzy, you are vomiting and have passed no stool or wind, or the belly pain is severe and constant. Book a doctor this week, without finishing the diary, if a change has lasted three weeks or more, blood is mixed into the stool, or you are losing weight without trying. See when bowel symptoms are an emergency.
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Using it well
How do you use the diary at the appointment?
Start today, not next week
Begin from the day you notice the change and keep going until the appointment, however short that gap is. Add what you remember from before, marked as remembered.
Put a short summary on top
Three lines: what changed, when it started and what worries you most. Doctors read this first, and it keeps the conversation on what matters to you.
Bring everything with it
Carry your medicine strips, old blood reports, any scan or colonoscopy report, and a note of relatives who had bowel cancer and roughly how old they were.
Hand it over, then ask
Let the doctor read it before you explain. Then ask what is most likely, which test comes next and what should bring you back sooner. The page on what the doctor will ask and examine covers the rest.
Being straight with you
What a symptom diary cannot tell you
It cannot tell you whether you have cancer, and it cannot rule cancer out. A diary records what you notice. Cancers on the right side of the colon often cause no visible change at all, only tiredness and anaemia, which means a low haemoglobin. That shows up on a blood test, not on the toilet paper.
It does not replace a test
A run of normal days does not cancel out a symptom that keeps coming back. If a doctor has recommended a colonoscopy or a stool test, the diary is no reason to postpone it. A positive stool test leads to a colonoscopy whatever the diary shows.
Who this does not suit
If you are already on chemotherapy, you need a different record that tracks treatment side effects. Ask your CION team for one, and see diarrhoea during chemotherapy. If your symptoms sit mainly at the back passage, such as pain on sitting or a lump at the opening, ask whether a rectal or anal cause is being considered. Rectal cancer has its own section.
Unsure whether your pattern needs a doctor? Call the helpline and read out a few days of entries.Questions we are asked
Common questions about keeping a bowel symptom diary
How long should I keep a bowel symptom diary?
Until your appointment, even if that is only a few days away. A week or two of entries usually shows a clear pattern. Never delay booking to collect more days. If the symptom has already lasted three weeks or more, book now and bring whatever you have.
Is there a version I can print?
Print this page and use the headings in the diary section as columns, one row per day. A ruled notebook works just as well. Phone notes are fine too, as long as each entry has a date and you can show the screen to the doctor.
Should I photograph my stool?
Only if you are comfortable doing so. A photo of blood or an unusual colour can help, because words like "dark" mean different things to different people. Keep it on your phone rather than sharing it on WhatsApp, and offer it to the doctor at the appointment.
My father will not talk about his bowels. Can I keep the diary for him?
Yes, if he agrees. Ask a few short questions each day at a private moment, such as how many times he went and whether he saw blood. Write what he tells you, not what you suspect. Many older patients find it easier to hand over a page than to say it aloud.
What is the most important thing to write down?
Any blood, and whether it was on the paper or mixed into the stool. After that, any lasting change from your usual pattern, and your weight. These three tell the doctor most about whether tests such as a colonoscopy are needed.
Can a diary show whether it is piles or something more serious?
It can make piles more or less likely, for example bright blood only after a hard stool. It cannot settle the question. That needs an examination and sometimes a colonoscopy, because piles and a growth higher up the bowel can be present at the same time.
Do I need to record food if I eat the same thing every day?
Briefly, yes. Note the changes rather than every meal: a feast, a fast, milk or curd you do not usually take, a new pickle, alcohol or eating out. In a steady home diet of rice and dal, it is the change from routine that usually explains a bad day.
Who should I show the diary to first?
A general physician or a gastroenterologist for a first assessment. If tests point to a bowel cause, CION arranges a colonoscopy through a partner centre and an oncologist reviews the result with you. Call the helpline if you are unsure where to start, and someone will guide you.
Your Specialists
Meet CION's colon cancer specialists. Bring your colonoscopy, scan or biopsy report.
Our surgical and medical oncologists plan colon cancer care together: which operation, whether chemotherapy is needed, and the follow-up that comes after.
Medical Oncologist
Dr. C. Raghavendra Reddy
MBBS(Gold Medal), DNB(General Medicine), DM(Medical Oncology)(Gold Medal)
Medical Oncologist
Dr. Bharati Devi Gorantla
MBBS, MD(General Medicine), DM(Medical Oncology)(Adyar,Chennai), ECMO, MRCP SCE(UK)
Medical Oncologist
Dr. Owais Mohammed
MBBS, MD (General Medicine), DrNB (Medical Oncology), ECMO, MRCP SCE (Medical Oncology) (UK)
Medical Oncologist
Medical Oncologist
Surgical Oncologist
Dr. Muralidhar Muddusetty
MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
Surgical Oncologist
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Sources
- NHS — Symptoms of bowel cancer
- NHS — Bleeding from the bottom (rectal bleeding)
- NHS — Irritable bowel syndrome (IBS)
- NICE — Suspected cancer: recognition and referral
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
Keep reading
Related pages
Talk to us
Not sure whether your diary shows something to worry about?
Read us a few days of entries and we will tell you honestly whether it needs a doctor soon, and which one. If tests are needed, we will help you arrange them. One helpline serves every CION centre.