Persistent vomiting and the threshold for seeking help — one year on Writing it up because I had to work it out twice and would rather nobody else did.
I would like to disagree carefully with the settled view on Persistent vomiting, and I would like to be argued out of it if the disagreement is bad.
The disagreement is about one step, not about the conclusion. If the step holds I withdraw it entirely.
I had written a reply contradicting the opening post and deleted it. Here is what survived.
What I would want before treating Persistent vomiting as settled: the method, the sample, and whether anyone tried to find the opposite result. Two of the three are usually missing.
Confirming the opening post from a second method, which matters more than confirming it from a second person.
My experience of Persistent vomiting contradicts the reply above. I am posting it as a data point rather than as a refutation, because one person's experience is exactly that.
Attribution is genuinely hard for a single case and the reporting schemes are designed to work with that. You are not expected to prove causation to file.
One more caveat and then I will stop qualifying: the sample selected itself.
The most useful contribution to this subcategory is a completed account: what happened, what was done, and what the outcome was.
Take it as a starting point and not as a specification.
Coming back to post #5, because the follow-up matters more than the original answer.
On Persistent vomiting: the maintained page in the documentation commons covers the general case with citations and a review date, which is more reliable than any reply here including this one.
Useful. I have added it to my own notes with the date on it.
Taking post #8 at face value and following it one step further.
Marking my uncertainty on Persistent vomiting explicitly. I am confident about the direction, much less confident about the size, and not confident at all that it generalises past the case in the first post.
Adding a note of thanks rather than an opinion. I did not know most of that.
Medullary thyroid carcinoma is the reason these compounds are contraindicated in people with personal or family history of MTC or multiple endocrine neoplasia type 2. Rodent toxicology showed a signal; human evidence of causation is absent but caution is appropriate.
None of the above is medical advice and I am not qualified to give any.
Pancreatitis is a genuine serious adverse event to know: severe epigastric pain, back pain, elevated lipase (≥3× upper limit of normal). If this constellation appears, stopping the drug and seeking urgent evaluation is appropriate.
For what it is worth, the same held on the two occasions I checked.
The claim about Persistent vomiting upthread is stronger than its source supports. I have read the source. The source says "associated with" and the post says "causes".
Reporting here and reporting to a national scheme are not alternatives. The second is what feeds safety surveillance.
If anyone has run this properly I would rather read that than my own guess.
I have three months of notes on Persistent vomiting and the honest summary is that the trend is real and the week-to-week numbers are noise. I nearly drew the opposite conclusion from the first fortnight.
That is consistent with mine, for whatever one more account is worth.
What would change my mind on Persistent vomiting is a second dataset collected by someone with no stake in the first. Until then I hold it loosely and I would rather say so than pretend to more.
Severe gastrointestinal events: persistent vomiting, abdominal pain out of proportion, or signs of bowel obstruction warrant urgent evaluation. Mild nausea and constipation are ordinary; severe versions are not.
Reporting to regulatory agencies: if you have had a serious event, reporting it to the regulatory agency in your country can help with signal detection across the population.
Taking post #25 at face value and following it one step further.
Two claims get bundled together under Persistent vomiting and they need separating. The descriptive one — this is what was observed — is usually well supported. The causal one — this is why — usually is not.
Almost every disagreement in threads like this one dissolves once you say which of the two you are making.
The arithmetic in post #29 is right; the assumption feeding it is the part to check.
Pancreatitis is a genuine serious adverse event to know: severe epigastric pain, back pain, elevated lipase (≥3× upper limit of normal). If this constellation appears, stopping the drug and seeking urgent evaluation is appropriate.
Filing this under things that are true until someone shows me otherwise.