⚕️ Educational information only — not medical advice. Read the full disclaimer

Arthritis Flare Tracker

A simple, private symptom diary. Log how your joints feel each day alongside sleep, stress, activity and foods you suspect, then look back at the trend and bring a printed summary to your next appointment. Patterns you notice here are questions to explore with your clinician — not answers.

Important: This tool is for personal record-keeping and general education only. It is not medical advice and cannot diagnose, predict or treat any condition. Always consult a qualified healthcare professional before changing your diet, supplements, exercise, or medication, and never stop a prescribed medication without speaking to the prescribing physician. Seek urgent care for a hot, swollen joint with fever, or sudden severe pain.
Your data stays on this device. Entries are saved only in this browser's local storage. Nothing is sent to us or anyone else — there is no account, no server and no analytics on your entries. Clearing your browser data (or using a private window) will erase them, so use Export to keep a backup.

Log a day

One entry per day. Saving a date that already has an entry updates it.

0 = no pain, 10 = worst imaginable.

Stress level
Joints affected
Foods / possible triggers today

Tick anything you had in a notable amount. See foods that may worsen arthritis for background.

Pain over time

Doctor visit summary

Self-reported symptom diary kept with the Joint Health Guide flare tracker (arthritiscauses.org/flare-tracker.html). Not a clinical record. Printed .

Bring this alongside any lab results — see arthritis biomarkers for markers such as hs-CRP and ESR that your clinician may track.

Possible triggers: pain with vs. without each tag

Read this first: this is not causation and not medical advice. These numbers simply compare your average pain on days you ticked a tag with days you didn't. With a handful of entries they are mostly noise, and many things change together (a stressful week can mean worse sleep, takeaway food and more pain). Flares can also lag a trigger by a day or more. Treat a difference as a question to explore — for example with a structured, supervised elimination trial — and discuss it with your clinician before cutting out foods.

History

Back up, move or delete your data

Export a CSV to open in a spreadsheet, or a JSON file you can import again later or on another device. Files are created in your browser — nothing is uploaded.

Importing merges entries; an imported day replaces an existing entry for the same date.