Keeping a Symptom Diary for a Disability Claim: Fibromyalgia and ME/CFS
Fibromyalgia and ME/CFS are both conditions where how you look on the day of an assessment says very little about your life. Symptoms fluctuate, there's no blood test that proves them, and the cost of an activity often arrives a day or two later. A good symptom diary is one of the most useful things you can bring to a disability benefits claim. Here's how to make one count.
What assessors are trying to find out
Systems differ between countries, but they ask similar questions: what can you do, how often, and at what cost?
- In the UK (PIP): Personal Independence Payment looks at daily living and getting around. An activity only counts as something you can do if you can do it reliably: safely, to an acceptable standard, as often as you need to, and in a reasonable time. For conditions that vary, what matters is how you are on most days over a year, so a descriptor applies if it fits you on more than half of days.
- In the US (Social Security disability): Social Security has specific guidance on how fibromyalgia (SSR 12-2p) and chronic fatigue syndrome (SSR 14-1p) are evaluated, and puts weight on medical records showing symptoms over time and how they limit your ability to work.
What to record each day
- What you did, and what you didn't. Plans cancelled and tasks left undone are as important as what you managed.
- How long things took and what help you needed. Showering took 40 minutes with breaks; your partner cooked; you sat down to dress.
- What it cost afterwards. Pain, exhaustion or a crash the next day or two. For ME/CFS this delayed payback is central, so note when it happened and how long it lasted.
- Your symptoms and their severity. A simple daily score for pain, fatigue and sleep, plus anything unusual.
- Good and bad days, honestly. Show the whole pattern, including the days you're better. It makes the bad days more credible, not less.
Make it usable
- Keep it going for weeks, ideally months. A long record shows the pattern; a few days don't.
- Summarise it. Assessors won't read every entry. A one page summary on top ("in the last 12 weeks, I had 51 days where I couldn't cook a meal") with the diary behind it is far more effective.
- Back it up. Ask your doctor or specialist for a letter that matches what your diary shows. Medical evidence and a consistent diary support each other.
- Get advice. In the UK, Citizens Advice and condition charities such as the ME Association and Fibromyalgia Action UK help with claims. In the US, many people work with a disability advocate or attorney.
A daily record that's ready when you need it
Mya logs your energy, exertion, crashes and how you are each day, and links crashes back to what caused them. Fibro does the same for fibromyalgia pain, fatigue and flares. Both turn months of entries into a report.
This article is for general information and isn't a substitute for medical advice. Talk to a doctor about your own symptoms, tests and treatment. This isn't legal or benefits advice, and rules change, so check the current guidance for your country.