A symptom diary that you will actually keep

Why bother at all

Two reasons, and neither is about discipline.

The first is that memory is a terrible witness. Asked how the last month has been, almost everybody describes the worst day and the most recent day, and nothing in between. That is not a personal failing; it is how recall works. A clinician hearing "I feel a bit rough sometimes" has almost nothing to act on. A clinician hearing "the two days after each dose I cannot keep fluids down, and it settles by day three, for the last three cycles" has a pattern, and patterns are actionable.

The second is that structured symptom reporting genuinely changes care. The best evidence comes from oncology, where Basch and colleagues found that patients who reported symptoms through a structured system during routine treatment did better than those who reported them the usual way — fewer emergency visits, and in the longer follow-up, better survival. Nobody has run that trial in our setting and we are not claiming the finding transfers. What it does establish is that the act of collecting symptoms systematically is not administrative busywork; it changes what clinicians see and when they act.

And there is a third, quieter reason members mention: a diary lets you see that the bad fortnight was in fact a fortnight, and that it ended.

The five-line format

Here is the whole thing. It takes about twenty seconds, twice a week.

• Date, and whether it was an injection day. Mark the dose day clearly. Everything else is read against it.
• Site, if you injected. Two words. This is also your rotation record.
• The one symptom that mattered most today, and a number out of three. Nought is nothing, one is noticeable, two is affecting the day, three is running the day.
• One sentence of anything else. Slept badly. Ate almost nothing until evening. Legs ached on the stairs. Felt completely normal, which is worth writing down too.
• Anything you took for it. Anti-nausea tablet, laxative, extra fluids, an early night.

That is it. No scoring system with twelve domains, no colour coding, no app that wants a subscription. Wren's observation from years of running this circle is that the elaborate systems get abandoned within a month and the five-line ones survive for years, and the five-line ones are the ones that actually change appointments.

Twice a week is enough for most people: dose day, and the day the effects usually peak for you. Daily is fine if you like it. Weekly is still far better than nothing.

What is worth recording that is not a symptom

Some of the most useful entries members keep have nothing to do with side effects.

Non-scale change. Stairs without stopping. Sleeping through. A ring turning again. Blood pressure at the pharmacy machine. Ankles at the end of a shift. These are the things that shift first for many people, and they are also the things that get forgotten entirely when the conversation is dominated by numbers.

Fluid and protein, roughly. Not a tally, not a target, just a rough note of whether you managed. Half the early headaches in our circles turn out to be fluid — see headaches and hydration — and protein is the thing that gets hardest exactly when it matters most.

Bowels. Nobody wants to write it down and it is the question every clinician asks. A single letter and a number is enough. The unglamorous guide explains why the timeline matters more than the day.

Life. A stressful week, a virus, a heatwave, a bereavement. Symptoms do not happen in a vacuum and the context is often what explains an odd cycle.

Priya's diary has one column she calls "the thing I would have forgotten", and it is the column her consultant reads first.

What we ask you not to record

This part matters to us and we would rather say it plainly than bury it.

A symptom diary is not a monitoring project for your body. We ask members not to keep daily weights here, not to log calories, and not to build a diary that turns into a scoreboard. For a meaningful number of people — including several who have written about it openly in our journals — detailed daily self-monitoring is the exact behaviour that a previous eating disorder ran on, and rebuilding it in a spreadsheet is not neutral.

The test we use: does opening the diary make the day easier to manage, or does it make you feel watched? If it is the second, stop. A diary that costs you more than it gives is not a diary you should be keeping, and no clinician needs it that badly.

If any of that lands close to home, disordered eating: warning signs and where to get help is the guide, support resources has the services, and the ed-recovery-aware circle exists precisely so that this can be discussed without anybody being told to try harder.

Food is not recorded here as good or bad. Neither are you.

Pick the format you will actually use

The best diary is the one that is already open. Members use, in roughly descending order of survival rate:

• A paper notebook by the kettle. Unglamorous, undefeated. Mark lives by this one.
• A single running note in a phone, newest at the top, no formatting. Fast, searchable, and always with you.
• Our symptom tracker, which we deliberately built to be about five taps rather than a project, and which produces a summary you can take to an appointment.
• A wall calendar with a coloured dot per day. Poor for detail, excellent for spotting a pattern across a whole month at a glance.
• Voice notes. Underrated for members who cannot face writing when they feel dreadful, and the honest tone of a voice note recorded on a bad day is often more informative than a tidy sentence written later.

Whatever you pick, keep it in one place. Two half-diaries in two apps is the commonest way this fails.

Turning it into ten minutes of appointment

The diary is raw material. The appointment needs a summary, and making it is a ten-minute job the night before.

Read back over the last two or three cycles and write three things. The pattern: what happens, when, for how long, how often. The impact: what it stops you doing — work missed, meals skipped, a weekend lost. The question: one clear question you want answered, phrased as a question rather than a request to ratify a decision you have already made.

Take the summary, not the notebook. Handing over forty pages of diary makes a clinician's heart sink; handing over five lines makes you the easiest patient of the morning. Our appointment questions tool builds the list with you, and talking to your GP when time is short is the guide on getting the most out of a very short slot.

One more use. Some patterns in a diary are not for the next appointment but for today: severe abdominal pain that bores through to the back and does not let up, persistent vomiting with no fluids kept down, signs of dehydration. Those belong to when a symptom needs a clinician, and the diary's job in that moment is only to tell you how long it has been going on.