Diarrhoea Treatment Online

Can an online doctor treat diarrhoea?

Diarrhoea suits video assessment because the decisions hang on history and hydration, both assessable on a call: what came first, who else is unwell, where you have been, what you can keep down, and how much urine you are passing. The honest limits are examination and testing: a tender abdomen needs hands, and persistent or bloody diarrhoea needs stool samples, which the doctor arranges through local services rather than pretending a camera can replace them.

Listen: Diarrhoea Treatment Online

The audio version of this topic from the Mobi Doctor podcast. Open the episode.

How an online consultation helps with diarrhoea

• A proper dehydration check: the doctor walks through the markers that matter (urine output and colour, thirst, dizziness on standing, drowsiness) and identifies who is high-risk, because dehydration, not the diarrhoea itself, is what makes this illness dangerous.^[1]
• Honest prescribing: most diarrhoea needs no antibiotic, and you will be told so plainly; where a specific bacterial or parasitic infection is likely, targeted treatment follows testing or a careful clinical case, not habit.
• Medicines managed while you are unwell: some regular medicines, including blood pressure tablets, diuretics and metformin, may need a short pause during significant dehydration, and the doctor tells you which and for how long, coordinating with your regular prescriber where needed.
• Wherever you are in Europe: ill in a hotel in Lisbon or an apartment in Kraków, the assessment works the same way, in English, with a plan matched to what is available locally.

What the doctor checks in an online diarrhoea consultation

The story usually names the cause, so the consultation is built around it. The doctor will typically ask about:

• Onset and course: hours or days, sudden or creeping, improving or worsening, and how many stools a day at the worst.
• What the stools look like: watery, fatty, with mucus, or with blood, and whether black and tar-like, which changes everything.
• Vomiting and fluid balance: whether you can keep sips down, roughly what you have drunk today, and your urine output and colour, the practical dehydration gauge.
• Fever: how high, how persistent, and whether with shivering.
• Travel: where and when, because destination changes the likely organisms and whether parasites belong on the list.
• Food and contacts: suspect meals, and whether household members or fellow travellers are ill too, the outbreak pattern of norovirus and food poisoning.^[5]
• Recent antibiotics or hospital care: diarrhoea after a course of antibiotics raises C. difficile, which needs testing rather than guessing.
• Your background: inflammatory bowel disease, diabetes, kidney disease, immunosuppression and pregnancy all lower the threshold for review.
• Your job: food handlers, carers and healthcare workers need specific advice about staying off work until 48 hours after the last episode.^[2]

What causes diarrhoea?

Most acute diarrhoea is caused by gut infections, viruses above all, spread through contaminated food, water and close contact; bacteria such as Campylobacter and Salmonella, and parasites such as Giardia, account for a smaller share, more after travel. Medicines, especially antibiotics, are a common non-infectious cause, and diarrhoea lasting over 4 weeks has a different list altogether.^[1]

Infections: the big three groups

Viral gastroenteritis is the everyday version: sudden watery diarrhoea, often with vomiting and cramps, sweeping through households and settling within about a week. Bacterial causes, typically from food, are likelier when fever runs higher, pain is more marked or blood appears. Parasites enter the picture with travel and with symptoms that grumble on for weeks rather than days: Giardia, classically, brings prolonged watery diarrhoea, bloating and remarkable wind after a trip. The treatment implications differ, which is why the history earns its keep.

Medicines and other non-infectious causes

Antibiotics themselves loosen stools in a sizeable minority of people, usually mildly, occasionally seriously (C. difficile). Metformin, some blood pressure treatments, proton pump inhibitors, magnesium antacids and overdone sugar-free sweeteners all cause diarrhoea; so does overshooting laxatives. When diarrhoea alternates with constipation over months, with cramping and bloating, the pattern points towards irritable bowel syndrome; when it persists beyond 4 weeks, or carries weight loss, night symptoms or a family history of bowel disease, it needs a structured work-up with stool tests, blood tests and sometimes referral, rather than another round of self-treatment.

How do I know if I am dehydrated?

Early dehydration shows as thirst, a dry mouth, headache, tiredness and darker, scantier urine; feeling light-headed when you stand is a step further. Serious dehydration shows as drowsiness or confusion, passing little or no urine, cold mottled hands and feet, and a racing heart, and it needs urgent in-person care, not monitoring at home.^[1]

Rehydrating properly is a technique, not just a volume: frequent small sips beat occasional large glasses, which tend to come straight back up. Oral rehydration solution from any pharmacy replaces salts as well as water and is the evidence-backed choice, for adults as well as children; the WHO credits oral rehydration with saving millions of lives, which is a striking pedigree for a sachet.^[1] Keep eating as tolerated once vomiting settles, plain food first. Alcohol and large caffeine hits work against you. For babies, frail older adults and anyone whose illness is into its third day without improvement, the threshold for medical review drops sharply.

What helps traveller’s diarrhoea?

Traveller’s diarrhoea is usually caused by bacteria picked up from food or water in an unfamiliar place, and most episodes settle within 3–5 days with fluids and rest. Oral rehydration solution is the foundation; loperamide can cover an essential travel day but should be avoided with blood in the stool or high fever. Routine antibiotics are not recommended.^[3]

The stewardship point matters more each year: reflex antibiotic use for every loose stool abroad drives resistance and disrupts your own gut flora, and international guidance reserves standby antibiotics for specific higher-risk situations, such as remote travel with underlying illness, decided with a doctor in advance rather than improvised from a hotel room.^[3][4] What a video consultation adds mid-trip is judgement: whether yours is the ordinary self-limiting kind, whether anything needs testing or treating where you are, and which local red flags should send you to in-person care. Prevention is simple and effective: bottled or treated water where tap water is unsafe, food served hot, fruit you peel yourself, and hand hygiene before eating. If symptoms begin towards the end of a trip and persist after you return, say so at assessment, because post-travel diarrhoea that lingers is exactly where parasite testing pays off.

Is my diarrhoea suitable for online care?

Most diarrhoea is, at least for assessment. Here is how doctors sort it, and where in-person care takes over.

Swipe sideways to compare →

Availability of individual medicines and who may prescribe them vary by country; your doctor confirms what applies where you are.

Treatment options for diarrhoea

What you can do yourself

Rehydration is the treatment: small frequent sips, oral rehydration solution by preference, and eating as tolerated once vomiting settles rather than starving yourself, which delays recovery. Loperamide is reasonable for adults who need to function through an essential day, at the labelled dose, but not with blood in the stool or high fever, and not for children. Protect the household: wash hands with soap and water (alcohol gel is weak against norovirus), separate towels, clean shared surfaces, and stay home until 48 hours after the last episode, longer rules applying to food handlers.^[2] Probiotics are optional: evidence is mixed, harm is unlikely, and no one should feel obliged.

Prescription treatment

A prescription is never issued without a consultation, and for diarrhoea the honest headline is that most episodes need none. Where vomiting blocks rehydration, an anti-sickness medicine can break the cycle. Antibiotics are only prescribed when there are signs of a specific bacterial or parasitic infection, guided by stool testing or a careful clinical picture such as dysentery-type illness or confirmed Giardia after travel; they do not help viral gastroenteritis, and unnecessary courses drive antibiotic resistance for everyone.^[4] The consultation also covers your regular medicines, pausing the ones that turn dehydration into kidney trouble, and ends with a written safety net: what should improve by when, and exactly which changes mean escalate.

When we treat diarrhoea online, and when we refer you

We treat online: acute watery diarrhoea in otherwise well adults, with a rehydration plan and review point; traveller’s diarrhoea anywhere in Europe, including standby planning before higher-risk trips; medication-related diarrhoea, adjusted with your regular prescriber; and persistent change work-ups started properly: stool tests ordered through local services, results reviewed, referral where they point onwards.

We refer or redirect you: blood in the stool, black stools, high persistent fever or severe pain, to in-person care the same day; serious dehydration signs, drowsiness, confusion, little or no urine, to emergency care with 112 named; suspected C. difficile with marked symptoms, promptly in person; babies and frail older adults with significant losses, to hands-on assessment early, because they decompensate fast; and diarrhoea beyond 4 weeks with weight loss, bleeding or night symptoms, to gastroenterology with the referral letter written during your consultation.

How Mobi Doctor works

1. Book a time that suits you: open daily 7am–11pm. Most patients speak to a doctor within about 15 minutes of their booked time. no subscription, exact price up front.
2. Speak to a licensed doctor about diarrhoea: a private video call: you describe what you feel, the doctor asks what matters, and you agree the right plan together.
3. Leave with your plan: everything agreed before you hang up: any prescription reaches a pharmacy near you in most EU countries, or a full refund.

Frequently asked questions about diarrhoea

Related conditions

Gastroenteritis Food Poisoning Norovirus Irritable Bowel Syndrome (IBS) All stomach and digestive problems

From the Mobi Doctor blog