Go Get This Checked

Every experienced triage nurse has a mental list of symptom clusters that trigger instant concern, no matter how the patient is framing their own complaint. Most people never get access to that list — they only find out a symptom mattered after something bad already happened.

This is that list, written down. It's not secondhand research like some of the other guides here — it comes straight from doing it, day in and day out, in an ER. The general rule underneath all of it: think horses, not zebras. Most symptoms have the boring, common explanation. This page exists for the small number of zebras worth knowing by name, plus the well-known instant-reflex ones, plus enough reassurance that it doesn't turn into a source of new anxiety.

Think of it as a makeshift triage nurse or EMS running in your own head — the same differential process, without the credentials or the equipment. A classic example of that move: someone acting drunk who might not actually be drunk. Check their blood sugar first, since severe hypoglycemia can look identical to intoxication. That's the whole spirit of this page: don't accept the first, most obvious explanation before ruling out the dangerous one that looks the same from the outside.

Common mimics

Things that look like one, less serious thing but might actually be something else — the "don't stop at the first explanation" category.

Acting drunk, but isn't. Check blood sugar. Severe hypoglycemia can look identical to intoxication: slurred speech, stumbling, confusion. Also worth considering: stroke, head injury, or a diabetic emergency going the other way (hyperglycemia).

Looks like a panic attack. It can genuinely be a panic attack, but chest tightness, shortness of breath, and a racing heart are also heart attack symptoms. Don't self-diagnose it as "just anxiety" without getting checked, especially on a first occurrence.

One tell: fingers going numb or tingly is common during a real panic attack (from hyperventilating). A trick that can help sort it out: give them the most intense sour or hot candy you can find — a Warhead, a Fireball. The brain can't stay locked on the panic while it's fully occupied with that sensory jolt.

This isn't instant — give it a couple of minutes of observation. In that window you'll generally know whether it's a sense of impending doom from a pulmonary embolism (PE), tachycardia from atrial fibrillation with rapid ventricular response (a-fib with RVR), or genuinely a panic attack settling down. All it cost to find out was one Warhead. If it settles, that's confirmation it was panic. If the symptoms keep going regardless, that's the signal it's something else, and it's worth getting checked.

Seems like a bad hangover. Worth ruling out dehydration severe enough to cause electrolyte problems, or, rarely, something like alcohol withdrawal in a heavier drinker, which can itself become dangerous.

Same symptom, different problem

Some symptoms present so similarly that the classic pairing fools people. The classic: testicle pain that looks like torsion but turns out to be a kidney stone. Belly pain is really broad — pancreatitis, GERD, a heart attack, and gallbladder trouble all have a similar presentation. That's why the story is important, and it's why this card is important.

The story narrows it down

Come in with epigastric pain and say "I felt it pop, and now it's tearing" — that's an AAA. Come in with epigastric pain and say you just got back from a ball game and had a big plate of cheese fries — that's GERD or gallbladder. Ask about gas patterns, and about other foods, to see if there's a pattern. If you're taking tons of Tums and it's still happening, it's probably not acid, and we do a HIDA scan to check your gallbladder. Even a story that seems insignificant can help hone in on what we're going to look at.

A few belly patterns that are easy to recognize:

• Tight belly, no BM (or diarrhea), bad breath, lots of very stinky burps — that's probably a bowel blockage.
• Tight belly, but lower — it feels like a cantaloupe at the belt line, and it feels like you need to pee but can't. Odds are it's a male, because that's prostate and bladder retention. It happens in females too, usually with a prolapsed uterus or mesh or something. But it's always a cantaloupe at the belt line, and they freak out when you touch it.
• Appendix is easy: touch the lower quadrants, and they'll jump out of the seat with a true hot appendix.

But normally, with two or three symptoms, any provider worth their salt will be able to hone in on what to look for.

The instant reflexes

Well-known, but worth stating plainly — no debate, no waiting, go now:

• Heart attack — chest pain, especially with sweating, nausea, or pain radiating to the arm or jaw.
• Stroke — face drooping, arm weakness, speech difficulty. Call it immediately; time is brain tissue.
• Severe allergic reaction / anaphylaxis — swelling of the face or throat, difficulty breathing after exposure to a trigger.
• Uncontrolled bleeding.
• Sudden loss of consciousness, or new/sudden confusion.
• "Worst headache of my life" — sudden and severe, described that way by the patient themselves.

The underknown zebras

The ones that kill people specifically because nobody ever told them what to look for. These are rare, but when they happen, minutes matter.

Dissecting or ruptured abdominal aortic aneurysm (AAA)

A sudden "pop" feeling in the abdomen, immediately followed by a tearing pain in the upper-middle abdomen (epigastric region), plus wildly different blood pressure readings between the two arms, plus inability to stand straight or lie flat. Instant-death territory. ER, immediately, no debate.

Brain bleed

Vomiting plus a splitting headache plus confusion — especially with a recent head hit. Everyone knows stroke symptoms; almost nobody's told this combination matters just as much.

Sepsis

High heart rate, a known infection source, low blood pressure, and blood sugar out of whack (if it's being checked). This combination means the body is losing the fight against an infection systemically — ER, not wait-and-see.

Angioedema

Throat swelling, especially in anyone taking an ACE inhibitor (any medication ending in "-pril" — lisinopril, enalapril, etc.). This can close the airway and kill. ER immediately, regardless of how mild it feels at first.

Rhabdomyolysis ("rhabdo")

A big underknown one. Muscle tissue breaks down and floods the bloodstream with a protein that can shut down your kidneys — possible dialysis if it goes far enough. Risk factors: intense workouts (especially after a break, or pushing way past normal), or being down a long time after a fall or being immobile somewhere — can't get up, stuck in one position for hours.

The tell: your urine turns dark brown — think KFC gravy or sweet tea, sometimes visibly chunky. People often assume they're just extra sore from working out, or hungover, and try to tough it out. If it feels worse than normal soreness and your pee is that dark, that's not "drink more water and rest" — that's a hospital trip. You need IV fluids, not home hydration, to protect your kidneys.

This is the classic farmer / football-player move: tough it out, assume soreness is just soreness, don't want to make a fuss. That mentality makes rhabdo specifically dangerous, because the people most likely to get it (hard physical work, pushing through pain) are also the people least likely to say something until it's already bad. They're worse off than they think they are, every time.

Clots, by name

DVT

Super common: a long trip, a plane ride, a sedentary lifestyle, a smoker, a young female on birth control — that's your hidden blood clot machine. The leg is going to be hot, red, and very angry. I've heard it described as a cramp that doesn't go away.

DVT means it's venous, not arterial, which is a little better — it's in a vein headed back to your heart. The problem here is the clot moving. You're going to get some kind of blood thinner and be discharged if it's mild. Serious clots get clot busters, maybe surgery, depending on the patient and where the clot is.

A clot has lots of names

A clot in any extremity is a DVT. In the lung, it's a pulmonary embolism, or PE. In the heart, that's a myocardial infarction — a heart attack. When a clot hits the brain, that's a stroke.

There are two types of stroke: a clot is one kind, and the other is a hemorrhagic stroke, which is the opposite. That's why you don't mess with strokes: the first sign of symptoms starts a timer. If you get to the hospital fast enough, we can reverse it. If you don't, we can't. That's why we don't question strokes.

Arterial blockage is a different problem

Now the problem isn't the clot — it's what the clot is blocking. The main issue is no oxygen getting past it. Think of it like a highway closed because of a wreck, with a stretch of empty highway in front of the wreck. What you get instead is a dead or dying extremity.

The reassurance side

So this list doesn't just create new anxiety — a few common, scary-seeming things that are usually the boring explanation:

Sudden confusion in an elderly person who's never been confused before — grandma talking to someone who isn't there, out of nowhere — is very often a urinary tract infection (UTI), not a stroke or a brain tumor. UTIs cause sudden confusion in older adults far more than people realize. Still worth getting checked, but not automatically the worst-case scenario.

One bad lab value usually doesn't mean you're dying. In the ER, the honest rule: if the provider's not worried, the patient shouldn't be worried either. The provider's pace and reaction is a better signal than the number alone.

A broad, vague complaint ("my belly hurts," "I feel off") often means a wide diagnostic net has to be cast to rule things out. That's the process working correctly, not the provider failing to find an answer.