When a symptom needs a clinician

What this page is, and what it is not

This is the page we point at most often, and we want to be exact about what it does.

It is a list. It is the collected, checked, plainly written list of symptoms that this community treats as reasons to stop working things out and get medical attention — because they are the ones where waiting causes harm. It exists so that you have read it once, calmly, on an ordinary afternoon, and so that at two in the morning you are not searching a symptom into a search engine and finding whatever the algorithm has for you that night.

It is not an assessment of you. We cannot see you, we do not know your history, and nobody here — including our facilitators, one of whom trained as a nurse and one as a pharmacy technician — is in a position to tell you whether your symptom is the serious version. That is not modesty, it is the actual limit. If you are frightened by something in your body and it is not on this list, that is still a good reason to contact a clinician. The list is a floor, not a ceiling.

And nothing here is a reason to be embarrassed about seeking help and being told you are fine. Being told you are fine is a good outcome. Members have been sent home reassured and have then thanked the community for pushing them to go, which is exactly the trade we are aiming for.

Seek urgent care today

These are the ones. Emergency department, urgent care, out-of-hours service, or whatever the equivalent is where you live — today, not at the next appointment, and without waiting to hear back from a routine line.

• Severe abdominal pain that will not settle, especially pain that radiates through to your back. Particularly if it is worse lying flat, better leaning forward, and comes with vomiting. This is how pancreatitis presents.
• Vomiting you cannot break. If you cannot keep fluids down for a whole day, or you are vomiting repeatedly and it is not easing, you need assessment rather than endurance.
• Signs of dehydration. Very little or no urine for many hours, very dark urine, dizziness or fainting on standing, a dry mouth with a headache that will not shift, confusion, or a racing heart.
• Signs of low blood sugar if you take insulin or a sulfonylurea. Shaking, sweating, confusion, slurred speech, sudden intense hunger, drowsiness, or unusual behaviour. Treat it first if you know how and have been shown, then get help. In someone who cannot be roused, this is an emergency call.
• Any change in your vision. Blurring, loss of part of your field of view, new floaters or flashes, double vision, or sudden pain in an eye.
• Signs of a severe allergic reaction. Swelling of the lips, tongue, throat or face, difficulty breathing or swallowing, a spreading rash with faintness. This is an emergency call, not a car journey.
• A sudden, severe headache — the worst you have had, arriving in seconds — or headache with a stiff neck, fever, confusion, weakness on one side, drooping face, or difficulty speaking.
• Pain under the right ribs with fever, shaking chills, or yellowing of the eyes or skin. Gallbladder and bile-duct problems in this territory need same-day assessment.
• Chest pain, pressure or tightness, particularly with breathlessness, sweating, or pain spreading to the jaw or arm. Treat as cardiac until somebody qualified says otherwise, even if you are certain it is reflux.
• Vomiting blood, or material like coffee grounds, or black tarry stools.
• A hard, distended, painful abdomen with vomiting and passing nothing at all, not even wind.

If you are not sure whether something is on this list, that uncertainty is itself a reason to ring a clinical line rather than to post. We will still be here afterwards.

Contact your clinician within a few days

Not emergencies. Things that should not be absorbed into normal life either, and that clinicians would rather hear about early.

• Nausea or vomiting that is stopping you eating or drinking properly across more than a couple of days.
• Constipation lasting more than about a week despite sensible measures, or any bleeding from the bowel.
• Reflux waking you most nights, or difficulty swallowing, or food sticking.
• Diarrhoea that is persistent, or any diarrhoea alongside signs of dehydration.
• A new lump or swelling in the neck, hoarseness that persists, or difficulty swallowing that is not clearly reflux.
• Heavy or prolonged hair shedding, or hair loss in patches rather than a general thinning.
• Palpitations, a resting heart rate that is unusually high or low for you, or new breathlessness on ordinary activity.
• Mood changes: new or worsening depression, marked anxiety, or thoughts of harming yourself. Say this to a clinician plainly; it is not a side note. Our support-resources page lists services worth finding, and please do use them.
• Anything about your relationship with food that is frightening you — skipping meals feeling like relief, rules that are hardening, fear of eating in front of people. This guide is written for that, and Jonah holds a circle for it.
• Symptoms in pregnancy, or discovering you are pregnant while on these medicines. Contact your prescriber promptly.
• Any new symptom that appears months into stable treatment with nothing else changed.

Why these particular symptoms

Briefly, because knowing why makes a list easier to remember.

Pancreatitis is the reason for the back-radiating pain entry. The trials have not shown a clear excess of pancreatitis in this drug class, and the product labels nonetheless carry a warning, and cases do occur. It is uncommon and serious, which is exactly the combination that justifies a low threshold for assessment. More here.

Gallbladder disease is the reason for the right-sided pain entry. Gallstones appear more often on drug than placebo in the trial safety data, and rapid weight loss by any means is a well-established risk factor. More here.

Dehydration and kidney injury is the reason vomiting and fluid loss get their own entries. Severe vomiting or diarrhoea has led to acute kidney injury in people on these medicines. FLOW (Perkovic, NEJM, 2024) showed benefit for kidney outcomes over years in people with type 2 diabetes and chronic kidney disease; that does not protect anybody from becoming dry over a bad weekend.

Hypoglycaemia gets its own entry because these drugs raise insulin secretion in a glucose-dependent way and so rarely cause it alone — but combined with insulin or a sulfonylurea the risk is real, and doses of those medicines often need reviewing when a GLP-1 is started.

Vision is on the list partly because of SUSTAIN 6 (Marso, NEJM, 2016), where complications of diabetic retinopathy were reported in 3.0 per cent on semaglutide against 1.8 per cent on placebo, and partly because sudden visual change always warrants assessment regardless of cause.

Thyroid symptoms are listed because of the rodent C-cell findings that sit on the labels of this class. Human relevance is unknown, the labels contraindicate use with medullary thyroid carcinoma or MEN2, and a persistent neck lump is worth showing somebody.

How to make the call go well

Members have found a few things help when you are unwell and trying to be taken seriously.

• Say what you take, by name, early. "I am on weekly semaglutide" changes how a clinician thinks about abdominal pain. Have the name and dose written down somewhere findable — in your wallet or on your phone lock screen — because you will not want to explain it while vomiting.
• Lead with the worst thing. Not the chronology. The pain, the vomiting, the vision, first sentence.
• Give duration. "Since Tuesday" is more useful than "for a while".
• Say if you cannot keep fluids down. That single fact escalates most triage decisions and people leave it out.
• Take someone with you if you can. Or ring somebody and stay on the line.
• Do not stop or change any other medicine on your own because of something you read here. Ask.

If you are in the situation of not knowing which service to use — routine line, urgent care, emergency — use the more urgent one. Nobody in this community has ever regretted that direction of error, and several of us have regretted the other.

A word about waiting rooms and being believed

We would be dishonest if we pretended everyone gets a fair hearing. Members in larger bodies, in particular, have been told for years that symptoms were about their weight, and have learned to under-report as a result. That is a rational response to bad treatment and it is also dangerous now.

Two things that have helped members. First, naming the medicine early, because it reframes the conversation as a drug question rather than a lifestyle one. Second, asking directly: "What could this be, other than the obvious? What would you want to rule out?" That question is polite, specific, and hard to wave away.

If you have been dismissed and you are still worried, seek another opinion. Petra’s line about refusal letters transfers: a first answer is a first draft. And if you come back and tell us about it in side-effect-support, somebody will have been there and will say so, which does not fix the system but does make the next appointment easier to walk into.

One last time, plainly: this page is a list, not a judgement, and it does not know anything about you. Use it as a reason to go, never as a reason to stay home.