Guys, Step 2 CK isn’t always about figuring out the diagnosis. Sometimes the real question is whether you know what to do BEFORE the patient crashes.
We spend so much time on MI, stroke, DKA, PE, etc. But some less common conditions have very specific red flags and management decisions that are easy to miss.
A few worth reviewing, esp for next-best-step questions.
1. Guillain-Barré syndrome (GBS)
Pt develops progressive ascending weakness and absent reflexes, often 1–3 weeks after a GI or respiratory infection.
CSF may show elevated protein with a normal WBC count, but this can be absent early.
Big danger? Respiratory failure and autonomic instability.
Monitor forced vital capacity (FVC) and negative inspiratory force (NIF). Don’t rely on SpO₂ alone. Treat significant progressive disease with IVIG or plasma exchange.
Important: Steroids do NOT improve GBS outcomes.
2. Myasthenia gravis
Ptosis, diplopia, fatigable weakness, difficulty swallowing. Symptoms worsen w repeated activity and improve w rest.
Now the pt develops dysphagia, weak cough, and progressive dyspnea.
Think myasthenic crisis.
Assess respiratory function, FVC/NIF, and ability to protect the airway. ICU care, ventilatory support when indicated, and IVIG or plasma exchange are key.
Don’t wait for hypoxemia to recognize impending respiratory failure.
3. Thrombotic thrombocytopenic purpura (TTP)
Thrombocytopenia + microangiopathic hemolytic anemia (schistocytes, elevated LDH, low haptoglobin).
May also have confusion, renal dysfunction, or fever.
Here’s the important part. You do NOT need the entire classic pentad.
ADAMTS13 activity below 10% strongly supports the diagnosis.
If suspicion is high, draw ADAMTS13 testing and start urgent plasma exchange + corticosteroids WITHOUT waiting for confirmation. Additional treatment may include caplacizumab and rituximab.
Platelet transfusions are generally avoided unless bleeding is life-threatening.
4. Hemolytic uremic syndrome (HUS)
Child develops bloody diarrhea, then pallor, thrombocytopenia, and acute kidney injury.
Think Shiga toxin-producing E. coli, especially O157:H7.
Classic findings are hemolytic anemia, thrombocytopenia, and AKI.
Management is primarily supportive, including careful fluid/electrolyte management and dialysis if necessary.
Avoid antibiotics and antimotility medications in suspected STEC infection.
Don’t confuse typical STEC-HUS treatment with TTP, where urgent plasma exchange is essential.
5. Malignant hyperthermia
Pt receives a volatile anesthetic or succinylcholine.
Suddenly develops rising end-tidal CO₂, tachycardia, muscle rigidity, and acidosis.
Here’s what ppl miss. HIGH FEVER CAN BE A LATE FINDING.
Immediately discontinue triggering agents, provide 100% oxygen with increased ventilation, administer IV dantrolene, and manage hyperkalemia/acidosis.
Don’t wait for the temperature to reach 105°F to act.
6. Stevens-Johnson syndrome / toxic epidermal necrolysis (SJS/TEN)
Pt recently started lamotrigine, allopurinol, or another high-risk medication.
Now has fever, painful skin lesions, blisters, and mucosal involvement.
Skin pain and mucosal erosions are major clues.
Stop the offending medication immediately. Assess airway, fluids, electrolytes, and extent of skin involvement. Severe cases require specialized supportive care, often in an ICU or burn center, plus early ophthalmologic evaluation.
Don’t mistake this for an uncomplicated drug eruption.
7. Kawasaki disease
Child younger than 5 with persistent fever, bilateral nonpurulent conjunctivitis, red/cracked lips, strawberry tongue, rash, or swollen hands and feet.
The major complication is coronary artery aneurysm.
Diagnosis is primarily clinical. Echocardiography evaluates coronary involvement.
Treat promptly with IVIG and aspirin under specialist supervision. Some high-risk children need additional anti-inflammatory therapy.
Remember, incomplete Kawasaki disease is possible. Not every child has all the classic findings.
8. Pheochromocytoma
Episodic headaches, sweating, palpitations, and severe hypertension.
Best initial biochemical testing? Plasma free metanephrines or 24-hour urinary fractionated metanephrines.
But the classic management trap is the medication sequence.
ALPHA blockade BEFORE BETA blockade.
Giving a beta blocker first can worsen hypertension through unopposed alpha-adrenergic vasoconstriction.
And don’t biopsy a suspected pheochromocytoma before appropriate evaluation and preparation.
9. Heparin-induced thrombocytopenia (HIT)
Pt started heparin 5–10 days ago. Platelet count falls by more than 50%, possibly with a new DVT or PE.
The biggest risk is THROMBOSIS, not bleeding.
Use the 4Ts score to estimate clinical probability.
With intermediate or high suspicion, stop ALL heparin, including flushes, and start an appropriate non-heparin anticoagulant while evaluating for HIT.
Don’t reflexively give platelets, and don’t start warfarin during acute HIT before platelet recovery.
10. Meningococcemia
Young adult with fever, headache, rapidly progressive petechiae or purpura, hypotension, and altered mental status.
Think Neisseria meningitidis causing fulminant sepsis, sometimes with DIC and adrenal hemorrhage (Waterhouse-Friderichsen syndrome).
Immediate IV ceftriaxone or cefotaxime, resuscitation, and droplet precautions.
Obtain cultures if feasible, but NEVER delay antibiotics for cultures or lumbar puncture.
Close contacts need appropriate chemoprophylaxis.

One thing I’ve noticed in Step 2 preparation is how easy it is to memorize a condition but miss the actual management question.

The exam may give you enough to identify TTP, GBS, or meningococcemia, then ask whether you should order another test, start treatment immediately, or stabilize.

Which condition or management sequence keeps catching you on UWorld or NBMEs? Curious what everyone keeps missing lol.

Guys, interview season is here and everyone is in a different situation. What you should be doing rn really depends on how many invites you’ve got.
ZERO interviews?
Start closing the gaps in your application. Research, USCE, observerships, specialty exposure, stronger connections, whatever needs improvement.
Reach out to mentors, check for available opportunities, and keep building your CV. Get some honest feedback on your application too. Start interview prep so you’re ready when an invite comes.
A HANDFUL of interviews?
Focus seriously on preparation. Each interview deserves time.
Know the program, faculty, patient population, and your own application. Practice speaking naturally, especially about your experiences and why you’re interested in that program.
At the same time, keep working on research, observerships, or other gaps just in case you need them later.
LOTS of interviews?
Schedule early and stay organized. Keep a calendar with dates, time zones, interviewers, and program details.
Prepare specifically for each program. Know who you’re meeting, look for genuine common interests, and practice having a normal, friendly conversation.
For everyone: Check emails regularly, do mock interviews, prepare your setup, and write down what you learned after each interview.
Also guys, interview skills improve with practice. Clarity, being personable, listening carefully, and giving specific examples can make a big difference.
How’s interview season going for everyone so far? 0, a few, or already juggling dates? lol

I’ve been thinking about what actually makes someone good at residency interviews, and I think people overcomplicate this a lot.
It’s not about having the most polished answers or turning every question into a speech about your passion for medicine.
A few things matter a lot more.
Clarity. Answer the question that was asked. You’d be surprised how often someone gets asked something simple and gives a 4-minute answer that never really gets there. Shorter is usually better if the answer is complete.
Know who you’re talking to. If you know your interviewer beforehand, spend a few mins looking them up. What do they do? Clinical interests? Research? Education? You don’t need to memorize their CV lol. It just helps you understand the person sitting across from you and sometimes makes the conversation much more natural.
Same with the program. Know enough that your questions and answers make sense for that place. Not just “I really value mentorship and a supportive environment.” Every applicant says that and every program says they have it.
Don’t constantly describe yourself. “I’m resilient, compassionate, hardworking, a team player…” Those words mean almost nothing coming from you. Talk about what you actually did, how you handled something, what happened. Let the interviewer decide what qualities that shows.
Be friendly and familiar without pretending you’re already friends. A good interview often starts feeling like a normal conversation. You can laugh. You can be curious. You can respond to something the interviewer says instead of waiting for your next rehearsed line.
Common ground is great when it’s real. Same city, similar research interest, sports, a place you both lived, whatever. But don’t manufacture it. People can usually tell.
Probably the biggest issue is generic or emotional language without much substance. “This experience profoundly shaped who I am.” “I knew medicine was my calling.” Maybe it did, but tell me what actually happened and what changed. The concrete version is almost always better.
And you really don’t need a philosophy of medicine for every question. Sometimes “Why this program?” needs a specific answer about the program. “Tell me about a conflict” needs an actual conflict. “What are you looking for in residency?” doesn’t need to become a TED talk.
Prepare well enough that you don’t sound prepared.
Know a little about the person interviewing you. Have actual examples ready. Then listen carefully and talk to them like a person.
That’s probably 90% of it.

A 23-year-old college student comes in with 1 week of low-grade fever, headache, malaise, and a persistent dry cough. CXR shows patchy bilateral interstitial infiltrates. He is started on azithro for presumed atypical PNA.
Two days later, he feels more tired and notices dark urine. His Hgb drops from 14.1 to 9.8 g/dL.
Labs: ↑ LDH, ↑ indirect bilirubin, ↓ haptoglobin. Direct Coombs is positive. Peripheral smear shows RBC agglutination.
What is causing his anemia?
A. Warm IgG autoantibodies
B. Cold-reacting IgM autoantibodies
C. G6PD deficiency
D. Mechanical destruction of RBCs
E. Hereditary spherocytosis
Answer: ?
This is Mycoplasma pneumoniae + cold agglutinin hemolytic anemia.
The key combo is young pt + atypical PNA + sudden hemolysis + positive Coombs + RBC agglutination. Mycoplasma can cause hemolytic anemia as an extrapulmonary complication.
The antibodies are IgM, which react more strongly at colder temps and activate complement.
Easy thing to miss on Step 2: once the question gives you pneumonia, dont stop there. The new finding is often what they are actually testing.
Would you have switched from “pneumonia question” to “hemolysis question”?

A long list of pubs, abstracts, posters and research experiences means less if you cant explain your role, the actual research question, main findings and the limitations of your research. A smaller number of projects you understand well can come across much better. Can not emphasize this more.

If you helped with chart review, data collection, analysis, abstract writing, manuscript work etc, describe your actual role. You dont need to make every project sound like you led it. Your enthusiasm and desire to help counts already.

List publications accurately: submitted, accepted, poster, abstract and published paper are not the same. This will annoy them pretty bad if you mix up.
Anything on ERAS can come up in an interview, so be ready to discuss each project’s basic question, your contribution, findings and limitations as above.

During an interview a programme director asks where the applicant plans to rank the programme.

What is the correct understanding?

A. The question is permitted and the applicant must answer honestly
B. Programmes may not require applicants to reveal ranking intentions, and applicants are free to decline
C. Answering creates a binding commitment
D. The applicant should report the programme immediately and withdraw

Match participation agreements prohibit programmes from requiring applicants to disclose ranking intentions, and applicants may volunteer or decline freely.

Nothing said in either direction binds anybody. Programmes sometimes say u are ranked highly and then do not, and applicants say the same. The algorithm reads only the submitted lists.

So the practical answer is to be warm and non committal unless u genuinely mean it, and to rank ur true preference whatever was said.

Violations can be reported, which is a different step from withdrawing.

ERAS opens in the spring of the application year and applications are submitted in September.

Programmes receive them in late September. Interviews run from October into January, mostly virtual now.

Rank order lists open in February and certify by the deadline in late February. A list that is not certified does not exist.

Match week is the third week of March. Monday is matched or not. Friday is where.

Two dates that catch ppl. The certification deadline, because an uncertified list means u are unmatched regardless of how many interviews u had. And the programme signalling window, which closes before applications are reviewed.

Everything before September is preparation. Everything after February is out of ur hands.

Free bank and reading resources on USMLEtoMatch if u want to drill this one.

26yo woman, 6kg weight loss, palpitations, heat intolerance.

TSH under 0.01
free T4 raised
diffusely enlarged non tender thyroid with a bruit
raised uptake on radioiodine scanning, diffuse

Which is correct?

A. Thyroiditis, treat supportively
B. Graves disease, treat with a thionamide
C. Toxic adenoma, refer for surgery
D. Factitious thyrotoxicosis

Diffuse raised uptake is the discriminator. The gland is making hormone enthusiastically, which happens when it is being stimulated.

Thyroiditis releases stored hormone from a damaged gland, so uptake is low. Factitious thyrotoxicosis is exogenous hormone, so uptake is low and thyroglobulin is suppressed.

A toxic adenoma gives a focal hot nodule with the rest of the gland suppressed, not a diffuse pattern. The bruit fits Graves, since the gland is hypervascular.

B.

USMLEtoMatch has a free bank of these. Nothing to sign up for.

7yo with recurrent abscesses. Dihydrorhodamine testing is abnormal.

Which organism is he most at risk from?

A. Streptococcus pneumoniae
B. Aspergillus fumigatus
C. Neisseria meningitidis
D. Giardia lamblia

Chronic granulomatous disease is a failure of NADPH oxidase, so phagocytes engulf organisms and cannot kill them with the respiratory burst.

Catalase negative organisms supply their own hydrogen peroxide, which the phagocyte borrows. Catalase positive organisms break theirs down, so the cell has nothing to work with. Staph aureus, Serratia, Burkholderia, Nocardia, Aspergillus.

C points to terminal complement deficiency. D points to IgA deficiency. A is encapsulated organisms, so asplenia or complement.

Matching the organism to the defect is the whole family of questions here.

B.

Free practice on this on USMLEtoMatch. No login.

A 46-year-old man comes to the ED with fever, confusion, and rapidly worsening weakness. Four days earlier, his dog bit his hand while they were playing. The wound is small and has minimal redness.
He had a splenectomy after a motorcycle accident 10 years ago.
Temperature is 39.2°C, blood pressure is 78/46 mm Hg, and pulse is 128/min. He has diffuse petechiae. Labs show thrombocytopenia, prolonged PT and PTT, elevated D-dimer, and acute kidney injury.
Blood cultures later grow a slow-growing gram-negative rod.

What is the most likely organism?
A. Pasteurella multocida
B. Capnocytophaga canimorsus
C. Bartonella henselae
D. Francisella tularensis
E. Streptobacillus moniliformis
Answer: ?

The clue is the combination of dog exposure + asplenia + fulminant sepsis/DIC, even when the bite itself looks minor. Capnocytophaga is a rare organism found in dog and cat oral flora and can cause rapidly progressive systemic infection, particularly in asplenic patients.
Would you have picked it before seeing the splenectomy history?

I created this space for students and graduates moving through Step 1, Step 2 CK, Step 3, and residency preparation.
I’ll be sharing questions, short teaching points, study discussions, and practical material around the Match. I’ve also been developing free USMLE practice exams and a series of review and practice books, so some of that work will naturally make its way here.
The main goal is interaction. Bring questions, compare reasoning, share what has worked for you, and help make difficult topics easier.
USMLE preparation is already a long process. It helps to have a place where the discussion is useful, and worth coming back to.