Track Crohn's and Ulcerative Colitis Without the Guesswork

What to log day to day with IBD

These are the markers that map onto the scores your gastroenterologist already uses, including stool frequency, rectal bleeding and urgency.

• Diarrhea, because stool frequency above your own baseline, plus urgency and any night-time waking to open your bowels, is the single most useful flare marker in both Crohn's and ulcerative colitis.
• Blood or Mucus in Stool, because visible bleeding suggests active mucosal inflammation rather than overlapping IBS, and its frequency drives escalation decisions.
• Abdominal Pain, noting site and whether it is cramping before a bowel movement or constant, which matters for suspected stricturing Crohn's.
• Painful Bowel Movements, including tenesmus and anal pain, which point to proctitis or perianal Crohn's disease.
• Fatigue, often the first sign of a flare or of iron deficiency anemia, and frequently the symptom that lags longest behind mucosal healing.
• Weight Changes, because unintentional loss over weeks is an objective marker your team will act on even when other symptoms sound stable.
• Fever, which alongside worsening pain can signal an abscess, severe colitis or infection on immunosuppression, and needs same-day advice.
• Nausea, which in Crohn's may reflect small bowel narrowing or partial obstruction, and can also be a drug effect from azathioprine or methotrexate.

Daily factors that shape your IBD pattern

Logging a handful of daily factors on the same timeline as symptoms is what separates a true flare from a bad food week.

• Daily Medications, so adherence to mesalamine, azathioprine, methotrexate or a biologic is visible, along with steroid courses and where symptoms sat at trough before an infliximab, adalimumab, vedolizumab or ustekinumab dose.
• Stress, which does not cause IBD but reliably amplifies gut-brain symptoms such as urgency and cramping, and helps explain flare-like weeks with no bleeding.
• Lots of Water, relevant because high stool output, ileostomy losses and a shortened bowel after resection all raise dehydration risk, especially in hot weather.
• Skipped Meal, since missed or restricted meals often reflect fear of urgency and pain, and repeated skipping over weeks is a real driver of weight loss and low energy.

Why symptoms alone can mislead you

IBD has a specific trap: symptoms and inflammation come apart in both directions. Up to a third of people with well controlled disease still have IBS-type symptoms from visceral hypersensitivity, bile acid diarrhea or post-inflammatory bowel changes, so a bad month may not mean active disease. The reverse is more dangerous. Some people, particularly with small bowel Crohn's, have significant inflammation and healing complications while reporting only fatigue and mild cramping. That is why clinicians pair what you report with objective markers such as fecal calprotectin, CRP, hemoglobin and weight, and why bleeding, night-time waking and stool frequency count for more than a general sense of feeling rough.

The pattern usually needs eight to twelve weeks of logging to read clearly. That is long enough to see whether frequency and blood are climbing together (inflammatory) or whether pain and urgency drift with stress and meals while blood stays absent (functional overlap), and long enough to match a calprotectin result to how you actually were that fortnight.

Preparing for your gastroenterology review

Whether you see a gastroenterologist, an IBD nurse specialist or a colorectal surgeon, the questions are consistent: how many stools a day at worst, how many with blood, are you waking at night, has weight changed, how many steroid courses this year, and how are you in the last two weeks before your biologic dose. Most people answer from memory, and memory flattens a flare into "not great."

Trace Health exports a dated PDF of your logs with severity and lifestyle factors on the same timeline. Bringing that to a review makes steroid dependence visible, shows whether symptoms return at trough (an argument for dose escalation or interval shortening), and gives your team a symptom record to place next to your calprotectin and bloods. It does not diagnose or treat anything, it just removes the guesswork from the history.

Frequently asked questions

How do I tell an IBD flare from IBS symptoms?

Look at what accompanies the pain. Inflammatory flares tend to bring rising stool frequency, visible blood or mucus, waking at night to open your bowels, low-grade fever and weight loss. IBS-type overlap usually means cramping and urgency that shift with stress and meals, no blood, no night-time waking and stable weight. Logging both symptom sets and your daily factors for a few weeks gives your team the contrast, and a fecal calprotectin test settles it.

How long should I track before a pattern shows up?

Two weeks is enough to describe a current flare accurately at an urgent appointment. Eight to twelve weeks is where trends appear: whether frequency is creeping up, whether blood is intermittent or daily, whether symptoms cluster before each biologic dose. Six to twelve months shows the bigger picture your team cares about, including how many steroid courses you have needed and whether weight is drifting down across seasons rather than week to week.

Can I share my bowel diary with my IBD team?

Yes. Trace Health generates a PDF of your dated logs, with severity levels and lifestyle factors on one timeline, and charts over days, weeks, months or the year. You can email it before a clinic appointment or hand over your phone during the review. Clinicians tend to look first at stool frequency, bleeding days, night-time symptoms, weight and medication adherence, so a chart is faster to read than a written narrative and harder to under-report from memory.

Is my stool and symptom data private?

Your data stays on your iPhone by default, with optional private iCloud sync if you want it on your own devices. There is no account to create, no sign-up, and nothing uploaded to a Trace Health server. Bowel symptoms, bleeding and weight are among the most personal things anyone logs, and nothing leaves your phone unless you choose to export a PDF or share it. The app supports 9 languages if English is not your first language.

What should I log while I am on steroids or starting a biologic?

Log the start and stop dates of the steroid course under daily medications, then track stool frequency, blood and pain across the taper. Symptoms returning as prednisolone drops below around 15 to 20 mg is the classic pattern of steroid dependence, and it is a direct argument for escalation. On a biologic, log the days before and after each dose. Symptoms clustering at trough often means low drug levels, which your team can check and act on.