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🧭 Tool
Diagnostic Timeline Builder
Undiagnosed is its own kind of exhausting: the same story told from the beginning, to the eleventh doctor, in fifteen minutes, while trying to remember whether the MRI was before or after the bad autumn. Build the timeline once here, print the one-page version, hand it over. Everything stays on this device — nothing is sent anywhere.
Recordkeeping only. This tool organizes information you enter. It does not diagnose a condition, rule a condition in or out, interpret a test result, or tell a clinician which tests or treatments are appropriate.
Symptoms happening right now
Nothing added yet. Current symptoms appear near the top of the printed sheet so they are easy to review.
Nothing on the timeline yet. Start with the earliest event you can date and mark dates as approximate when needed.
A chronology can make scattered records easier to review
Records get transferred as a stack, not a story. Each specialist sees their own slice: the neurologist has the MRI, the rheumatologist has the bloodwork, and nobody has the fact that the fatigue started four months before either of them was involved. You are the only person who has been present at every single appointment, which makes you the only person who can put the sequence together — and sequence is frequently the diagnostic clue.
Two things are worth capturing that people usually leave out. First, negatives: every condition already excluded, and by what test. A new doctor's opening move is often to reconsider the obvious candidates, and a clear "already excluded, here's the date and the test" saves months. Second, treatments that partially worked. A drug that helped for three weeks and then stopped is a real piece of information, not a failure worth omitting.
Keep the printed sheet to one page if you can. It is far more likely to be read in the four minutes before the appointment than a folder is, and it can go into the chart afterwards. If you have more detail, bring it — but lead with the page that can be absorbed at a glance.
Going to an appointment soon? The Doctor Visit Prep Sheet helps you get your questions out before the time runs out, and the Symptom & Function Diary tracks day-to-day function alongside this.
Frequently asked questions
Why bring a written timeline to a new specialist?
A new specialist usually has a short appointment, a partial records transfer, and no easy way to see the chronology. Retelling several years of history out loud, under time pressure, tends to come out in the order you remember it rather than the order it happened. A one-page dated timeline can make the sequence and prior records easier to review. Record what clinicians told you about prior tests or conditions, but the timeline does not decide whether a test should be repeated or whether a condition is excluded.
What should go on the timeline?
Dated events can include symptom onset, appointments, tests and the results you were given, conditions that clinicians considered, treatments tried, hospital visits and diagnoses that were recorded. If a date is approximate, mark it as approximate rather than presenting it as exact.
Is my health information sent anywhere?
No. Everything is stored in your own browser on this device using local storage. Nothing is uploaded, there is no account, and clearing your browser data removes it. Export a backup file if you want a copy of your own, and print the summary to take to appointments.