Name the diagnosis. Then explain the mechanism.
USMLE BANK is a Step 1 question bank built around the two steps the exam asks for. Every explanation opens with the same three lines — clues, diagnosis, mechanism — and then goes through every answer choice.
We are writing the questions now. Step 1 first, Step 2 CK next.
- Clues1-year-old with light skin and hair, a musty body odor and developmental delay
- DiagnosisPhenylketonuria
- MechanismPhenylalanine hydroxylase deficiency → phenylalanine is not converted to tyrosine and builds up → less tyrosine for melanin, so skin and hair are light
In PKU, tyrosine becomes an essential amino acid
A format sample. Explanations are written in Japanese first, with the exam's medical terms kept in English.
Written for the way Step 1 asks.
Original, exam-style questions
Clinical vignettes with one best answer. Labs come as tables, and where the exam would show a photo, a slide or a scan, so do we. Every question is written from scratch.
Clues → Diagnosis → Mechanism
The same three lines open every explanation, so you practise the reasoning the exam rewards, not just the letter that was right.
Every answer choice explained
Each wrong answer says when it would have been right, and every explanation ends with HIGH-YIELD lines in English, one fact per line, ready for review.
Explanations in the language you think in
Questions and answer choices stay in exam English. Explanations come in Japanese first, with disease, enzyme and drug names kept in English. More languages are planned.
Step 1 first. Step 2 CK next.
- NOW
Writing Step 1
Questions are being written and reviewed, system by system.
- NEXT
Step 1 opens
The question bank goes live as a web app.
- LATER
Step 2 CK
Same format, same account.