How to track your symptoms when you don’t remember exact dates
Nobody remembers the exact date. “Around Christmas” counts. Here’s how to build a timeline a doctor can use, with the page I keep.

The doctor asks when it started and your brain goes completely blank.
Same.
Most people with symptoms nobody can explain don’t remember exact dates.
They remember “around Christmas” and “right after the move.”
Good news, that’s enough.
“It’s getting worse” gets a nod.
A rough timeline gets questions.
Why “it’s getting worse” gets you a nod and a pamphlet
“Worse” compared to what?
Your doctor can’t see your last 2 years.
They see 15 minutes of you, sitting up, being polite.
Without even a rough timeline, there’s nothing for them to compare.
And that’s not you being vague.
Nobody told you to keep track.
You were busy being sick.
What the research says about writing it down
In a trial of 626 headache patients, the ones who kept a diary for a month before their first visit got the right diagnosis 98% of the time.
With the interview alone, it was 87%.
That came from conference data, not a full journal paper, but the direction is clear.
Video helps even more.
For something that looks and feels like a seizure, adding a phone video to the history and exam took the right diagnosis from 78.6% to 95.2%.
That study had 44 patients, so it’s small.

The UK’s national health guidance even tells doctors that a pain and symptom diary can help the conversation for endometriosis.
One rule on video.
Film only if it’s safe and someone is with the person.
Never delay emergency care to get the shot.
Step 1. Build your past timeline from rough dates
You’re not writing a court transcript.
You’re giving a doctor a shape.
- Rough dates count. “Spring 2023,” “around Thanksgiving” and “the week after my birthday” all work.
- Hang things on life events. Holidays, a move, a new job, a trip, a breakup, a season.
- Use ranges when you can’t count. “A few times a month.” “Most mornings.”
- Put “about” in front of anything you’re guessing. Doctors expect estimates. They just need something.
Step 2. Mark the turning points
You only need 3 to 5.
- When you first noticed it.
- When it got worse.
- When something new showed up.
- Anything that seemed to set it off or make it better.
Step 3. From today on, write down 4 things
- Roughly when.
- About how long it lasted.
- What came right before it.
- What you couldn’t do after.
A notes app works.
So does the back of a receipt.
Done beats pretty.
Step 4. Bring it as 1 page
Put the past timeline on top and the recent log under it.
Hand it over before you sit down.
I wrote a whole guide on the 1 page.
The page I keep
Copy this into your notes app and fill it in.
| When (rough is fine) | What happened | How long | What came before | What I couldn’t do after |
|---|---|---|---|---|
| About spring 2023 | First time I noticed it | A few minutes | Long day, no food | Drive home |
| Around Thanksgiving | It got worse | |||
| This week |
Do this today
Write down the first time you remember it and the most recent time.
A season is fine.
“Summer, I think” is fine.
How I know
In 2023 mine happened every 2 to 3 weeks.
Now it can be up to 7 in one day.
“Worse” got nods.
A timeline got questions.
I’m not a doctor.
Medicine isn’t my field, so I built my medical AI specialists, over 30 AI agents, one for every department you could get a medical degree in.
They search new peer-reviewed research for me every day.
They don’t diagnose.
They help me turn a messy timeline into the questions worth asking.
This isn't medical advice. If someone is having a seizure that lasts more than 5 minutes, or they're hurt, call 911.