How to keep a symptom diary: a simple example

A symptom diary does not need to track every detail. It needs to show what happened, when it happened, and how it changed your day. This simple format takes only a few minutes and gives your doctor a clear record to review.

What to include in a symptom diary

Pick three to five symptoms that matter most to you. You can also record sleep, food, stress, or medicine when those details may help explain the day. For each entry, include:

The date and time.
The symptom and where you felt it.
How strong it felt on a 1-to-10 scale.
What it stopped you from doing.
What you took or did, and whether it helped.

A simple symptom diary example

Your entry can be short. Here is one example:

Tuesday, July 7 at 1:00 p.m.

Fatigue: 7 out of 10.
Started after lunch and lasted about three hours.
Slept five hours the night before.
Had to stop work and lie down.
Rest helped a little. Fatigue was 5 out of 10 by 4:00 p.m.

This entry gives a doctor more useful detail than "I was very tired." It shows when the symptom started, how strong it was, what else was happening, and how it affected the day.

Write it down when it happens

Add the note while the details are fresh. A few words are enough. You do not need a long journal entry. If you cannot write at once, make the note later that day.

Record good days too

Good days help show what is normal for you. They can also help you and your doctor see if your care plan is helping. You do not need to write much. A short note such as "pain was 2 out of 10 and I finished my normal walk" is enough.

Prepare a short summary for your visit

Before your visit, look for changes that repeat. Note how often each symptom happened, how strong it was, what affected it, and what it stopped you from doing. Bring that short summary with your diary.

The best symptom diary is one you can keep using. Start small, stay clear, and record the details that will help you and your doctor understand what changed.