There are no rare diseases — only diagnoses that come late, or come wrong.
If it feels life-threatening, call 911 now.
Or if you are the parent, partner or friend doing the searching. Often the signs were there all along, spread across different visits, tests and specialists, and no one put them side by side. This book does, in plain words.
Usually in ordinary blood and urine results, where a number “only a little off” gets read past, visit after visit. We show you which ones, and what to ask about them. See the tests →
And the words to ask it, with a short page you can post to your patient portal, so your doctor has it before you walk in. Get ready for a visit →
Private, because there are no accounts and nothing you read or type leaves your device. Graded, because every number shows how strong its evidence is and where it came from. Honest, because we offer hints, never verdicts. Your doctor makes the call. What we promise →
Or go straight to: a list of symptoms to look through a diagnosis you have or suspect test results you don’t understand an appointment coming up
Are you concerned this may be an emergency?Open the checklistSee every condition in the book (23)
Grouped by the part of the body they mostly affect. Many reach further, and each chapter shows where. Chapters with the most depth · See where they overlap