A checklist of heart attack warning signs is making the rounds. On October 31, 2026, the topic 外网爆火的心脏病征兆, roughly "heart attack warning signs going viral overseas," sat at No. 23 on Weibo's hot search board. The hot-list position is the news hook. The claims themselves stand or fall against published medical guidance, and that comparison is where their precision starts to go.
Judged against the published pages, every sign on the circulating list traces to official wording. Two arrive narrowed, the arm pain fixed to the left side where official wording names no side, and "cold sweat" in place of the NHS's plainer "sweating".[1] The official list also runs wider than the items doing the rounds. The one add-on the record documents, a coughing rescue, appears in none of the NHS's official steps.[1][5] The instruction itself matches across the pages, to call an emergency number, 999 on the NHS page and 911 on MedlinePlus's.[1][3] The NHS page carrying the published list was last reviewed on 31 March 2026, so the comparison runs against guidance re-checked this year, not a decade ago.[1]
The circulating items against the published list
The items doing the rounds are crushing chest pressure, pain running down the left arm and into the jaw, cold sweat and shortness of breath. Set against the published wording, each one lands differently.
| The item doing the rounds | What the official pages say | Verdict |
|---|---|---|
| Crushing pressure on the chest | "chest pain which may feel like crushing or squeezing on your chest"[1]; "Chest pain is the most common symptom of a heart attack"[3] | Traces |
| Pain running down the left arm and into the jaw | The pain "may also spread to your arm, neck and jaw"[1]; the emergency criteria cover "chest pain that's spreading to your arms, neck or jaw"[1] | Traces with one narrowing; the official wording names no side |
| A cold sweat | "sweating"[1] | Traces with the "cold" added by the circulating phrasing |
| Shortness of breath | "feeling short of breath"[1]; gasping, choking or not being able to get words out is an emergency criterion[1] | Traces |
The arm item is the clearest narrowing. The NHS wording names the arm together with the neck and jaw, and its emergency criteria list the same three sites.[1] The left side never appears in either sentence.
The sweat item narrows in the other direction. The official word on the NHS page is "sweating";[1] the "cold" qualifier is the circulating phrasing's addition.
The published list runs wider. One sign feels like indigestion, which the NHS describes as "feeling like you have indigestion – you may have a burning feeling in your chest and feel full or bloated".[1] Another is a color change, "pale, blue or grey skin – on black or brown skin this may be easier to see on the palms of the hands".[1] The same page also names "feeling sick (nausea) or being sick (vomiting)".[1] The items doing the rounds are not the whole official list.
No coughing step in the NHS action list
The add-on that comes with the circulating checklist is a coughing rescue. The NHS tells people what to do while waiting for medical help, and its list is short. "Sit and rest on the floor in a comfortable position, with your knees bent and your back supported," the page says.[1] The one resuscitation step it names is for a different situation, "If someone stops responding to you and stops breathing, start CPR".[1] Coughing appears nowhere in that list.[1] Snopes, the fact-checking site, keeps a dedicated entry on the coughing claim, headlined "How to Survive a Heart Attack When Alone".[5]
The official pages speak with one voice on the first move. The NHS's version is "Call 999".[1] MedlinePlus's encyclopedia entry reads, "A heart attack is a medical emergency. If you have symptoms of a heart attack, call 911 or your local emergency number right away".[3] The same entry warns, "DO NOT WAIT. You are at greatest risk for sudden death in the early hours of a heart attack," and, "DO NOT try to drive yourself to the hospital".[3] The NHS agrees on the driving point, "Do not drive yourself to A&E".[1] The reason to move fast sits on the MedlinePlus topic page, where quick treatment "may be able to prevent or limit damage to the heart muscle".[2] For symptoms short of the emergency list, the NHS points to its 111 advice line, including anyone who is "suddenly more short of breath than usual".[1]
No separate wording for women on the pages checked
One more question travels with the checklist, whether women's heart attacks carry different warning signs. The two pages checked answer it narrowly. MedlinePlus's heart-disease-in-women topic names coronary artery disease as "the most common type of heart disease in both men and women".[4] The NHS page publishes one symptom list and one set of emergency criteria, and neither carries separate wording for women.[1] On the pages checked, one list and one threshold serve every reader.[1]
What survives, and the one action
Read against the published pages, the checklist doing the rounds keeps its items and loses its precision. The left-arm shorthand narrows official wording that covers the arm, neck and jaw together,[1] and the coughing rescue attached to it appears in none of the NHS's official steps.[1][5] On the sex question, the pages checked carry one list and one threshold for every reader.[1] The part official guidance states most firmly is the action line. MedlinePlus's encyclopedia puts it as "call 911 or your local emergency number right away", with "DO NOT WAIT" and a driving ban attached;[3] the NHS's version is "Call 999", with the same driving ban.[1] That action line is the checklist in the form the guidance publishes, and it is the part worth keeping word for word.