Tell WhatDx what’s been happening and upload the reports you have.
It reconstructs the timeline, studies the evidence, and asks the follow-up questions that matter.
When a new lab result, scan, specialist opinion, or treatment response arrives, WhatDx picks up the same investigation again.
WhatDx is not a general chatbot waiting for the right prompt. It uses a physician-designed process and multiple leading AI models to actively investigate your case with you.
WhatDx / case 41F2
General-purpose AI is useful when you already know what to ask. Difficult medical cases often fail at exactly that point. WhatDx is designed to decide what information would actually move the case forward, ask for it, and keep the same question alive over time.
Upload notes, scans, lab reports, discharge summaries, and medication histories. WhatDx turns them into one timeline and keeps the source of each claim visible.
You should not have to invent the next prompt. WhatDx pauses when one missing detail could materially change the investigation.
Old assumptions, treatment failures, and contradictory findings stay visible instead of being smoothed away.
Bring back a specialist opinion, test result, or treatment response and continue the same case instead of starting over.
These published cases did not require inventing a new drug or building a research laboratory. They required a careful history, the willingness to reconsider an old assumption, and enough time to follow the clues.
A young woman had been treated as having cerebral palsy for more than ten years. Reopening the diagnosis led to dopa-responsive dystonia; a small dose of levodopa produced a dramatic recovery in the published case.
Recurrent swelling can look like many common problems. In a BMJ case report, a mother researched the pattern, raised hereditary angioedema with clinicians, and the hypothesis was confirmed through appropriate testing.
In a survey of 129 people with EPP, the mean delay from first symptoms to diagnosis was 13 years. Fifteen percent reported that they or their family suggested the diagnosis to a physician.
A rheumatology case series of 14 patients found a median 13-year diagnostic delay. Every patient had alkaline phosphatase below the age- and sex-adjusted reference range.
A published case described chronic urticaria unresponsive to conventional therapy alongside fever, bone pain, arthralgia, inflammation, and monoclonal IgM. Recognizing the constellation changed the diagnosis and treatment approach.
These are published medical cases and case series chosen to illustrate diagnostic reasoning. They do not imply that every unresolved illness has a rare diagnosis, that similar symptoms imply the same condition, or that WhatDx can diagnose or treat disease independently. Medical decisions should be made with qualified healthcare professionals.
These stories are not about patients outsmarting doctors. They show a structural problem: clinicians have limited time across many cases; patients have years of context in one case. We think there should be something in between.
WhatDx can do the slow, structured work before follow-up: gather a longitudinal history, ingest scanned records, ask clarifying questions, and return a concise case dossier for your review.
The patient completes the work at home. WhatDx handles the record upload and multi-turn interview without consuming clinic time.
You get a structured dossier, not a black-box verdict. Key anomalies, contradictions, treatment failures, and open questions are surfaced for clinical review.
The clinician remains the decision-maker. WhatDx is research support, not an autonomous diagnosis or prescribing system.
A difficult medical case deserves more than a quick chatbot answer. WhatDx brings together powerful frontier AI models inside one guided medical research process.
Depending on the case, WhatDx can draw on leading models such as GPT-6 Sol, Claude Fable 5.1 and Gemini 3.8 Flash. You do not need to choose a model, write the perfect prompt, or know what question to ask next.
WhatDx keeps working through the case with you — reviewing records, reconstructing the timeline, asking focused follow-up questions, checking whether the current explanation still fits, and identifying what information may be most useful next.
Different frontier models can bring different strengths to the same case. WhatDx can use multiple perspectives when a question is complex or uncertain.
Instead of waiting for you to keep prompting it, WhatDx conducts a structured, in-depth interview and decides which follow-up questions could actually change the investigation.
Symptoms, reports, previous diagnoses, treatments and new evidence stay connected over time. You can return when a new test, specialist opinion or treatment response becomes available.
WhatDx turns the investigation into a clear case summary: what fits, what remains uncertain, what deserves another look, and what evidence may help move the case forward.
current introductory price per 90-day case token
No account, email, phone number, social login, or real name is required to open a research case. Save the random token somewhere safe; it is the key to reopening the case.
Get research access Medical information and files you choose to submit are sensitive session data. Review the Privacy Policy before using the service.Purchase access or use a configured discount code. Keep the token somewhere you control.
Upload records and answer focused questions about the case.
WhatDx may ask for a specialist opinion, test result, old report, or treatment-response update.
New information updates the case rather than forcing you to start from zero.
WhatDx does not provide emergency care, perform physical examinations, independently diagnose disease, or tell patients to start, stop, or change treatment without an appropriate clinician.
