What's the Dx?

WhatsTheDx is a free daily diagnosis game for healthcare students and professionals. Each day brings a new clinical case: read up to five progressive clues and guess the correct diagnosis to build real clinical reasoning skills.

Every case reveals one clue at a time. In Hard mode you can type an answer with autocomplete or spend an attempt to skip ahead — each wrong answer or skip unlocks the next clue, and solving in fewer attempts scores more points. Prefer multiple choice? Easy mode reveals all five clues and gives you a single pick.

New cases are published daily across medicine, psychology, pharmacy, physical therapy, optometry, dental, occupational therapy, audiology, and chiropractic, so you can practice diagnostic reasoning in your own field or explore others.

Yes. Today's case and every released archive case are free with no account required. A free account saves your streak and history.

It is built for medical, psychology, pharmacy, PT, optometry, dental, OT, audiology, chiropractic, and PA students and clinicians who want quick, case-based practice for board exams, clinical rotations, or everyday differential-diagnosis sharpening.

No — you can play today's case as a guest. A free account lets you track your streak, review your play history, climb the specialty leaderboards, and replay cases you have completed.

Sure is — meet Oogway, our wise old turtle mascot and resident Chief Diagnostic Officer. He's pondered more differentials than he can count and lives by one motto: slow and steady cracks the case. 🐢