Tracking Symptoms Between Cycles — What to Write Down

Log the date and cycle day, each symptom with a simple severity from 1 to 5, when it started, and anything that made it better or worse. Keep it to one line per symptom per day — a quick daily habit like this is far more useful to your oncology team than a description recalled from memory weeks later.

• Date and cycle day — how many days since the last infusion.
• Each symptom, rated 1 to 5 — mild, moderate, or severe, in your own words.
• When it started and how long it lasted — even a rough time of day helps.
• Anything that changed it — food, rest, or a missed dose of a supportive medicine.
• Temperature, on days with fever or chills — a number is more useful than "felt warm".

Immune-related side effects are recognised by their pattern over days, not by how bad a single day feels. A symptom that is brand new, that keeps getting a little worse rather than better, or that pairs with a second symptom in a different part of the body is more worth flagging than one tough afternoon that passes on its own.

Your log doesn't decide what a symptom means — it makes the pattern visible so the treating team can decide, faster and with better information.

The easiest format is one page per cycle — a single sheet, note, or spreadsheet with one row per day. It doesn't need to be fancy: a printed grid, a phone note, or even the back of an old appointment card works, as long as it's the same page every day so the pattern is easy to see at a glance.

1. 1

   Pick one place for the whole cycle

   A notebook page, phone note, or simple spreadsheet you'll actually open every day — the tool matters less than sticking with it.

2. 2

   Give each day one row

   Date, cycle day, main symptom(s), and a severity number from 1 to 5. Nothing more is required.

3. 3

   Add a "changed since yesterday" column

   Better, same, or worse — this single column is what makes a pattern jump out without rereading every entry.

4. 4

   Bring the whole page to every visit

   Even the days that felt fine. A flat line on the page is useful information too, not just the bad days.

Rule six columns onto a page, or six columns into a spreadsheet, and you have a working tracker. The two example rows below show how little detail each entry actually needs — this is not real patient data, just the format.

Read a full worked example for gut-related symptoms specifically in Counting and Reporting Loose Motions Accurately.

Bring the whole page, not just today's line — the trend matters more than any single entry. Lead with what's changed since the last visit, state the timing relative to the last infusion, and say plainly whether a symptom is new or one you've already discussed, so nothing gets repeated or missed.

• Bring the full log — the trend across the cycle is more useful than one good or bad day.
• Lead with what's changed — start the update with new or worsening items, not everything at once.
• Mention timing — same day as infusion, a few days after, or unrelated to timing at all.
• Say new vs. already discussed — this alone saves a lot of back-and-forth in a short visit.

Call your oncology team promptly, rather than waiting for the next scheduled visit, if a tracked symptom is clearly getting worse day over day, a brand-new symptom appears, or two symptoms start showing up together. Your log is what turns "clearly getting worse" into something you can show, not just describe from memory.

Every clinical decision about what a pattern means, and what to do next, belongs to your treating team — the log's job is only to give them accurate, dated information. If you're simply unsure whether something is worth a call, our helpline can help you decide: 1800 202 8726.

These companion pages go deeper into related caretaker questions worth bookmarking alongside this one.

• Counting and Reporting Loose Motions Accurately — a worked example of exactly the kind of detail this log should capture for gut-related symptoms.
• When the Patient Wants to Stop and the Family Does Not — for families whose log has become part of a harder conversation about continuing treatment.
• Helping a Patient Who Feels Fine but Needs Monitoring — why tracking still matters on the days nothing feels wrong.
• Immunotherapy at CION Cancer Clinics — how our team supports patients and families through every cycle, from the first infusion onward.

Caretakers Are Part of the Care Team Too

Families who track symptoms consistently give our oncologists a clearer, faster read on how treatment is going.