Spot a Flare Coming: Early Warning Signs, Triggers and a Printable Tracker

Name: Arthritis Flare Early Warning Signs & Triggers (UK)
Creator: Louis Maxwell

Written by Louis Maxwell — First Contact Practitioner, HCPC PH128483.

Written by the Living With Arthritis team · pending clinical review by Louis Maxwell (HCPC PH128483)

Quick answer: No tool can predict a flare, but many people notice early signs such as heavier fatigue, longer morning stiffness, warmth in a joint or poorer sleep. Common triggers include overdoing it, stress, illness, missed medicines and, for gout, alcohol, large meals and dehydration. Track symptoms for at least four weeks to find your own pattern and start your flare plan early.

Checked on 11 October 2026 against the NHS pages on rheumatoid arthritis treatment and gout, NICE guideline NG100, and flare guidance from the National Rheumatoid Arthritis Society and the National Axial Spondyloarthritis Society. Nothing on this page can predict a flare. It helps you learn your own pattern.

A flare is a period when arthritis symptoms become worse and harder to control. It might be more pain and stiffness all over, or one or two joints becoming swollen and tender, often with tiredness that rest does not fix. Flares can range from short and manageable to severe enough to keep you in bed.

No app, test or website can reliably tell you when a flare is coming. But many people find that, over time, they notice early clues and things that seem to set flares off. Spotting those clues means you can start your flare plan sooner, adjust your day, and contact your team earlier if you need to. This guide explains common early warning signs, possible triggers and what the evidence says about them, and gives you a printable tracker to find your own pattern.

What a flare can look like

Flares are different for each person, and even for the same person no two flares are always the same. Common features include:

more joint pain, stiffness or swelling than usual
morning stiffness that lasts longer
fatigue that feels overwhelming and is not relieved by sleep
difficulty with usual tasks such as dressing, work or caring for others
poor sleep because of pain
feeling generally unwell, low or irritable
"brain fog" or difficulty concentrating

In osteoarthritis, a flare often means a period of more pain and stiffness in a joint, sometimes with some swelling, often after more use than usual. In inflammatory arthritis, such as rheumatoid arthritis, psoriatic arthritis or axial spondyloarthritis, a flare usually reflects more inflammation. In gout, a flare is a sudden attack of severe pain, heat and swelling in a joint.

Early warning signs people notice

The National Rheumatoid Arthritis Society (NRAS) says you may get better at identifying early signs of a flare, and that fatigue sometimes feels worse just before a flare starts. It also notes that in some cases there may be no warning at all. Early signs people commonly describe include:

Tiredness that is heavier than usual or comes on earlier in the day
Stiffness that lasts longer in the morning or returns after sitting
A "niggle" or warmth in a joint that has flared before
Puffy fingers, rings feeling tight, or shoes feeling snug
Sleep becoming lighter or broken by pain
Mood changes such as feeling flat, tearful or short-tempered
Needing more painkillers than usual to get through the day
Feeling "fluey" or run down
In gout, a tingling, burning or aching in a joint that has had attacks before

Your signs may be quite different. The point of tracking is to find yours.

Possible triggers and what the evidence says

Flares can happen without any obvious cause. When there is a trigger, these are the ones most often described by NHS and patient organisations.

Overdoing it

NRAS and NASS both list "overdoing" things as a common trigger, such as a big clean, a long day out, or catching up on everything on a good day. Pacing activity across the week can help. See our guide to pacing and energy management.

Stress

Many people report that stress can trigger flares or make them harder to cope with. NRAS and NASS both mention it. Stress and flares can feed each other, so stress management is part of flare prevention.

Infections and illness

NRAS says flares sometimes follow periods of illness. Infections can also be more serious if you take immune-suppressing medicines. Follow your team's advice on vaccines and what to do with your medicines when you are unwell.

Missing or changing medicines

Missing doses, running out of a prescription, or reducing or switching a medicine can be followed by a flare. Never stop or change a prescribed medicine without advice. Set reminders and order repeat prescriptions early.

Poor sleep

Poor sleep can be both a cause and a result of flares. Keeping a steady routine helps.

Gout triggers

The NHS says a gout attack can be triggered by an illness that causes a high temperature, drinking too much alcohol or eating a very large meal, getting dehydrated, injuring a joint, or taking certain medicines. It advises getting treatment immediately if you feel an attack starting. See our guide to gout flares and diet.

Weather

Many people feel their arthritis responds to the weather. A large UK smartphone study of 2,658 people with chronic pain, published in 2019, found significant but modest links between pain and humidity, air pressure and wind speed. The effect is small, varies between people, and you cannot change the weather, so it is most useful as a reason to plan gentler days.

Food

Apart from gout, there is little reliable evidence that a particular food triggers flares for most people. If you suspect a food, track it, but do not cut out whole food groups without advice from a GP or dietitian.

Hormones

Some people notice changes around periods, pregnancy, after giving birth or around the menopause. Talk to your team if you notice a pattern.

How to find your own pattern

NASS suggests tracking symptoms over time to monitor your condition and identify anything that might trigger a flare, using a paper diary or an app. A simple approach:

Track for at least four weeks, ideally through at least one flare.
Score the same few things each day, such as pain, stiffness, fatigue, sleep and mood, from 0 to 10.
Note possible triggers, such as a busy day, stress, illness, missed medicine, alcohol, poor sleep or weather.
Look back after a flare. What changed in the 1 to 3 days before?
Write down your personal warning signs and what you will do when you notice them.
Share it with your team. Patterns are useful at appointments and help decisions about treatment.

Be careful not to read too much into one or two days. Flares sometimes happen for no reason, and coincidences are common. Look for things that happen again and again.

Printable personal early-warning tracker

Print this page or copy the table into a notebook. Score each item from 0 (none) to 10 (worst). Tick any possible triggers.

Week starting: ____________
Item	Mon	Tue	Wed	Thu	Fri	Sat	Sun
Pain (0–10)
Morning stiffness (minutes)
Fatigue (0–10)
Sleep quality (0–10, 10 = best)
Mood (0–10, 10 = best)
Swollen or warm joints (which?)
Extra painkillers needed? (Y/N)
Trigger: very busy day
Trigger: stress or upset
Trigger: illness or infection
Trigger: missed or changed medicine
Trigger: alcohol or large meal
Trigger: cold, damp or windy weather
Other (write in)

My early warning signs

Fill this in after you have tracked a few weeks or a flare:

The first thing I usually notice is: ______________________
Other signs that a flare may be starting: ______________________
Things that seem to come before my flares: ______________________

When I notice my warning signs, I will

Cancel or move: ______________________
Use these comfort measures: ______________________
Take medicines as agreed in my plan: ______________________
Tell: ______________________
Contact my team if: ______________________
My rheumatology advice line or GP number: ______________________

Keep this with your flare action plan, which sets out what to do once a flare has started.

How to read your tracker

After a few weeks, look back over your sheets and ask yourself:

Did fatigue, stiffness or sleep change in the 1 to 3 days before pain went up?
Do flares tend to follow particular kinds of day, such as a long shift, a busy weekend or travel?
Did a flare follow a missed dose, a cold or an upsetting event?
Is there a time of the month or season when scores are usually higher?
How long do flares usually last, and what helped them settle?

Circle anything that appears more than once. One coincidence is not a pattern, but the same sign before three flares is worth acting on. Bring the sheets to your next appointment: a few weeks of scores often explains more than trying to remember how things have been.

Lowering the chance of a flare day to day

You cannot prevent every flare, but these steps help many people:

Take medicines as prescribed and order repeat prescriptions in good time.
Pace activity: spread big jobs across days and build rest into busy days.
Keep moving with regular, gentle exercise that suits you.
Protect your sleep with a regular routine.
Manage stress with things that work for you, such as relaxation, time outdoors, or talking to someone.
Look after your general health, including vaccines your team recommends, as infections can trigger flares.
For gout, follow NHS advice: have alcohol-free days, drink plenty of fluids, and take any preventive medicine as prescribed.
Plan ahead for known busy times such as holidays or house moves.

When it might not be a flare

Not every worsening is a flare. A single hot, swollen joint with a fever could be an infection. New pain after a fall could be an injury. Pain in a new place, or symptoms unlike your usual flares, should be checked. If in doubt, ask your GP, pharmacist or specialist team.

What to do when you notice the signs

NRAS suggests these self-management steps at the first signs of a flare:

rest and relaxation, while keeping gently moving to stop stiffness building
taking pain medicines regularly and at the right dose, as advised by your pharmacist or doctor
hot baths or showers for morning stiffness, and cool packs for hot, swollen joints
using aids, such as a stick if a knee is affected, or splints
wearing comfortable, supportive shoes
letting those closest to you know so they can help

NASS suggests avoiding high-impact activity during a flare but keeping moving with gentle stretches, short walks or swimming, and asking your rheumatologist or GP how to adjust your usual medicines during a flare. Our guide to managing flare-ups at home has more ideas.

Getting help from your team

NICE guideline NG100 says adults with rheumatoid arthritis should have rapid access to specialist care for flares, and that short-term steroids can be considered to manage flares. Many rheumatology services have a telephone or email advice line. Contact your team if:

a flare does not settle with your usual measures within the time your team suggested
flares are happening more often or lasting longer
you have needed steroids for flares several times
you are unsure whether to take, pause or change a medicine

Frequent flares can be a sign that your treatment needs reviewing. Your tracker is useful evidence for that conversation.

If you are older or frail

In older people, a sudden worsening in mobility or confusion is not always a flare. It can be an infection, a fall or a medicine side effect. Our guide to flare or frailty explains the difference.

When to get medical help

Same-day help from your GP or NHS 111 if a joint is hot and swollen and you feel unwell, have a high temperature, or feel hot, cold or shivery. This can be an infection, especially if you take immune-suppressing medicines.
Urgent help for gout that is getting worse with a fever or feeling sick.
Urgent help for new headache, jaw pain when eating, or vision changes if you have polymyalgia rheumatica or are over 50.
Call 999 for back pain with numbness in both legs, or bladder or bowel changes.
Contact your team if flares are frequent, severe or not settling.

Frequently asked questions

Can an app predict my arthritis flares?

No app can reliably predict flares. Tracking apps or paper diaries can help you notice your own patterns, which is useful in itself.

What is the most common early sign of a flare?

It varies. NRAS notes that fatigue may feel worse just before a flare, but some flares come with no warning.

Does the weather really cause flares?

A large UK study found modest links between pain and humidity, air pressure and wind. The effect is small and varies between people.

Can stress cause a flare?

Many people with inflammatory arthritis report that stress triggers or worsens flares, and patient organisations list it as a common trigger.

How long should I track symptoms?

At least four weeks, ideally including a flare, so you can look back at what happened beforehand.

Should I take extra medicine when I notice warning signs?

Only as agreed with your doctor or pharmacist. Ask your team how to adjust medicines during a flare and write it in your plan.

When should I tell my rheumatology team about flares?

If a flare does not settle, flares are becoming more frequent, or you have repeatedly needed steroids. Bring your tracker to appointments.

Sources and further reading

Educational information for people in the United Kingdom, not personal medical, legal or financial advice. NHS processes, rules and prices change, so check the linked official sources and speak to your GP, specialist team or pharmacist about your own situation. Charity no. 1218461. Pending clinical review. If you feel very unwell, call 999 or go to A&E. For urgent advice, contact NHS 111.

Continue with related help

Arthritis flare-ups — the hub
Arthritis flare management — what helps
A flare week plan — for older adults
Arthritis symptoms: what to do next — red flags and signposting
Emergency Arthritis Flare Checklist: Printable Step-by-Step (UK) — a flare checklist
Weather and Arthritis Pain Explained: What Helps (UK) — weather and pain
Arthritis Pain Tracking Journal: Free Printable Template (UK) — a pain tracking journal

Last updated 2026-10-11. This is general information, not a substitute for personalised medical advice.