Inflammatory bowel disease: diarrhoea, fluids, nutrition, flares and medicine teaching
- Safe practice
In Crohn disease and ulcerative colitis the nurse tracks stools and fluids, supports nutrition and mood, and teaches medicines and flare warning signs.
What it is
Crohn disease and ulcerative colitis are lifelong inflammatory bowel diseases with flares and remissions. During a flare the patient may have frequent, sometimes bloody diarrhoea, pain, fever and weight loss, with a risk of dehydration, anaemia and malnutrition. Nursing care tracks stools and fluid balance, supports nutrition, gives and teaches the medicines, watches for serious complications and pays attention to mental health. Disease details are on the condition pages.
What it requires
- A stool chart and a fluid balance.
- Weight and nutrition screening (malnutrition, anaemia).
- The medicine history and how the patient takes the medicines.
- Checking for drainage, fistulas or sores that do not heal.
How it is applied (and why)
- Record every stool: number, consistency, blood and urgency — it shows whether the flare is improving.
- Keep a fluid balance and watch for dehydration — diarrhoea causes losses.
- Weigh the patient and screen nutrition; refer to the dietitian — malnutrition and anaemia are common.
- Give supplements only as prescribed (iron, calcium with vitamin D, B12 after ileal surgery) — absorption may be poor.
- Teach flare eating: small, frequent meals, sips of water, less fibre, fat and spice — it eases symptoms.
- Give medicines as prescribed and teach adherence — keeping up with them prevents flares.
- Check pain relief: no NSAIDs, no antidiarrhoeal without the prescriber — both can worsen the disease.
- Ask about and look for drainage, fistulas or sores that do not heal, and report them — they need treatment.
- Ask about mood, stress and coping, and refer as needed — IBD raises the risk of depression and anxiety.
- Support quitting smoking in Crohn disease — quitting improves the disease.
In nursing practice
- Ulcerative colitis: toxic megacolon, severe bleeding, narrowing, perforation and severe infection are possible.
- Crohn disease: fistulas, abscesses, strictures and bowel obstruction are possible.
- Colon cancer risk rises with years of disease, so periodic colonoscopy is recommended.
- Outside the gut: joint pain, eye irritation, skin lesions, liver disease, anaemia and low bone density.
- Corticosteroids are a short bridge; immunomodulators and biologics are the long-term treatment. See the linked page on corticosteroids.
- Surgery may lead to an ileostomy (see ostomy care).
Common mistakes
- Giving an antidiarrhoeal without the prescriber's agreement.
- Offering an NSAID for pain.
- Counting stools without noting blood or urgency.
- Not asking about mood and coping.
Test yourself
Think of the answer, then tap the question to see it.
What should a stool chart record in IBD?
The number of stools, their consistency, any blood and urgency, so the team can see whether a flare is improving.
Which pain medicines are avoided in IBD?
NSAIDs such as aspirin, ibuprofen and naproxen, which can worsen symptoms. Paracetamol (acetaminophen) is preferred for mild pain.
Which eating advice helps during a flare?
Small, frequent meals and sips of water, and limiting high-fibre, fatty, fried and spicy foods; dairy only if tolerated.
What is a serious complication of ulcerative colitis?
Toxic megacolon, severe bleeding or perforation of the colon.
Connections
Educational content for students; it does not replace your institution's protocols, supervised clinical training or a prescriber's order. Dose-calculation examples use made-up numbers: they are educational, not a clinical order.
Sources: Crohn disease (MedlinePlus, U.S. National Library of Medicine, 2026); Ulcerative colitis (MedlinePlus, U.S. National Library of Medicine, 2026); About Inflammatory Bowel Disease (Centers for Disease Control and Prevention, 2026).
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Representative model, for educational purposes only.