A joint that turns hot, red and swollen overnight needs attention, because the cause can be anything from a gout flare up that settles within a couple of weeks to a joint infection that needs hospital treatment within hours. Joint pain with swelling, redness and heat is inflammation made visible. The pattern of symptoms gives a General Practitioner (GP) the first clues about what is behind it.

This guide explains what each symptom means and the most common causes, including gout symptoms in the foot, big toe and hands. It also covers the warning signs that make a swollen joint an emergency and what to expect from an appointment with our private GP service in Lurgan.

What Joint Pain, Swelling, Redness and Heat Tell You

When a joint is irritated by injury, crystals, infection or an immune system attack, blood flow to the area increases and fluid collects in and around the joint. That response produces four signs:

  • Pain: ranges from a dull ache after activity to sudden, severe pain that makes the joint impossible to move or put weight on.
  • Swelling: the joint looks puffy or rounder than the matching joint on the other side of the body.
  • Redness: the skin over the joint turns pink or red. Redness can be harder to see on black or brown skin, so judge by heat and swelling as well as colour.
  • Heat: the joint feels noticeably warmer than the skin around it when you touch it.

Three details help narrow the list of causes: which joint is affected, how fast the symptoms arrived and whether more than one joint is involved. A GP uses all three, together with your medical history and medicines. You can see the range of problems we assess on our conditions we treat page.

Common Causes of a Hot, Red, Swollen Joint

Gout

Gout is caused by too much uric acid in the blood, which forms sharp crystals in and around a joint. The main gout symptoms are sudden, severe pain with hot, swollen, red skin over the affected joint.

What does gout feel like? Most people describe intense, throbbing joint pain that arrives within hours. Even light pressure from a sock or a bedsheet can be unbearable.

The big toe is the joint affected first in most attacks, so a swollen big toe is one of the best-known signs of gout. Gout in the big toe can spread to the wider foot. Gout in the foot can involve the ankle too. Gout in the hands, including gout in the fingers, is less common than gout in the foot but follows the same pattern. Wrists, elbows and knees can also be affected.

Without treatment, a gout flare up lasts one to two weeks. Later attacks can last longer. Several factors raise the risk:

  • A family history of gout
  • Being male, with risk rising with age
  • Being overweight
  • Drinking alcohol
  • Having been through the menopause (see our menopause appointments for related symptoms)
  • Taking diuretics (water tablets) or some blood pressure medicines
  • High cholesterol, high blood pressure, kidney problems or diabetes
  • Recent surgery or injury

A flare up can be triggered by heavy drinking, a large meal, dehydration, a high fever, a joint injury or a new medicine. Our guide to gout symptoms, causes, diet and lifestyle covers food and drink triggers in detail.

Gout is the one cause on this list with a dedicated clinic at our Lurgan site. Our Private Gout Clinic offers a consultant-led assessment. Dr Roger Stewart, our consultant rheumatologist, lists gout among his clinical interests.

Pseudogout

Pseudogout looks like gout but is caused by calcium crystals instead of uric acid crystals. Where gout favours the big toe, pseudogout starts in the knee in many people. Repeated attacks of a hot, red joint are a reason to book an assessment, because the two conditions need different management.

Septic arthritis (joint infection)

Germs can reach a joint through an injury, through the bloodstream or after joint surgery. Septic arthritis causes sudden, severe pain, in one joint in most cases, with swelling, redness, heat and difficulty moving the joint. A high temperature is common but not everyone has one. This is an emergency. The section on warning signs below explains what to do. Our article on sepsis awareness explains the signs of the wider life-threatening reaction that infection can trigger.

Rheumatoid arthritis and other inflammatory arthritis

Rheumatoid arthritis is an autoimmune condition, which means the immune system attacks the lining of the joints. It develops over several weeks, not hours. Joint pain affects the small joints of the hands and feet on both sides of the body. Morning stiffness that lasts longer than 30 minutes is a typical sign. Swelling, warmth and redness can come with tiredness, low energy and fevers. Symptoms come and go in flares. Our rheumatoid arthritis guide covers diagnosis and treatment. Psoriatic arthritis (linked to psoriasis) and reactive arthritis can also produce hot, swollen joints.

Osteoarthritis flare ups and injury

Osteoarthritis is wear to the joint cartilage and is the most common type of arthritis. Joint pain builds steadily in the knees, hands, hips or back. Morning stiffness eases within 30 minutes. Gout and infection produce the strongest heat and redness, but osteoarthritis joint pain can come with swelling and warmth after heavy use. Our osteoarthritis guide explains the condition in more detail.

A recent injury can also cause a hot, swollen joint. Marked swelling of the knee after a fall needs hospital assessment. The risk is higher if you take blood thinners such as warfarin, because bleeding into the joint is possible. Persistent back or joint aches without heat or redness are covered on our back pain page, which explains why most back pain does not need an MRI scan. Joint injuries from sport are covered in our sports injury physiotherapy guide.

A skin infection over the joint

Cellulitis, a bacterial skin infection, can sit over a joint and look like joint inflammation. A hot, red, tender area of skin is a reason to book a GP appointment. Our skin rash page lists the signs that need same-day or emergency care.

How the Causes Compare

Cause Typical pattern Joints affected Speed of onset
Gout Severe pain with hot, red, swollen skin Big toe first, then foot, ankle, hands, wrists, elbows or knees Hours
Pseudogout Hot, red joint with repeated attacks Knee first Hours to days
Septic arthritis Severe pain, cannot move the joint, sometimes fever One joint in most cases A few days
Rheumatoid arthritis Stiffness over 30 minutes in the morning, swelling, warmth Small joints of hands and feet on both sides Several weeks
Osteoarthritis Steady worsening pain, stiffness under 30 minutes Knees, hands, hips, back Months to years
Injury Swelling, warmth and bruising soon after the incident The injured joint Minutes to hours

Only an examination can confirm which row fits you. Several causes overlap. Gout can look like infection.

Signs of Gout: What a Flare Up Looks Like

Signs of gout follow a recognisable sequence:

  1. Sudden onset: severe pain in one joint, with the big toe the most common site.
  2. Visible inflammation: hot, swollen, red skin over the joint.
  3. Peak tenderness: the joint cannot tolerate pressure or movement.
  4. Slow settling: pain and swelling ease over one to two weeks without treatment.
  5. Recurrence: further attacks can come back and last longer if the cause is not treated.

How do you know if you have gout or another condition? You cannot tell from symptoms alone, which is why a first attack deserves an assessment. Does gout go away on its own? A single attack settles without treatment, but the underlying uric acid problem stays. Repeated untreated gout can lead to joint damage, painful lumps under the skin called tophi and kidney stones.

When a Hot, Swollen Joint Is an Emergency

Septic arthritis damages a joint quickly, so treat these symptoms as urgent:

  • Sudden, severe pain in one joint
  • Swelling around the joint with red or changed skin colour
  • Being unable to move the joint or put weight on it
  • A high temperature, shivering or feeling unwell
  • Joint pain after recent joint surgery or with an artificial joint
  • Marked knee swelling after an injury, particularly if you take blood thinners

Ask for an urgent GP appointment. If you cannot get one quickly or you feel seriously unwell, go to your nearest emergency department. Our clinic is not an emergency service. In an emergency, call 999. Treatment for septic arthritis is hospital-based in most cases, with antibiotics given into a vein and drainage of the joint.

People with rheumatoid arthritis, diabetes or a weakened immune system face a higher risk of joint infection, so they should act on these symptoms without delay.

What to Do at Home While You Arrange an Appointment

These steps ease joint pain, heat and swelling while you wait for assessment:

  • Rest the joint: avoid putting pressure on it and raise the limb where possible.
  • Cool it: hold a cool pack against the joint for up to 20 minutes at a time. Wrap the pack in a cloth so it does not touch bare skin.
  • Drink water: stay hydrated and avoid alcohol until the flare settles.
  • Check your medicines: ask a pharmacist or GP whether anything you take could be contributing. Anti-inflammatory painkillers such as ibuprofen are used for gout attacks, but they are not suitable for everyone, so ask a pharmacist first if you have stomach problems or kidney disease or take blood thinners.

Home care does not replace an assessment. A first attack of joint pain with heat and swelling warrants a GP appointment. So does a flare that does not respond to your usual treatment.

How a Private GP Assesses Joint Pain, Swelling, Redness and Heat

Our first appointment guide explains the full process. Our GPs, including Dr Abdel Nasir Nour, follow the same steps for a painful, swollen joint:

  1. History: when the symptoms began, what triggered them, whether you have had attacks before and which joints are involved.
  2. Medicines and health conditions: diuretics, blood pressure treatment, diabetes, kidney problems and recent surgery all change the possible causes.
  3. Examination: the GP checks the joint for heat, swelling, redness and movement and looks at the skin and neighbouring joints.
  4. Plan: treatment for the flare, advice on self-care and a clear next step.
  5. Tests or referral where they change the plan: referral letters cover consultants and imaging. Physiotherapy and imaging can also be arranged through Friends Medical Service. Scans are not the first step for every joint problem.

Letters and results can be shared with your NHS (National Health Service) GP on request. Our service works alongside the NHS, not instead of it. Our guide to private GP versus NHS GP care explains how the two fit together.

Appointment options and prices

A 30-minute slot suits a first assessment of a painful joint, particularly if you have more than one concern.

Appointment Price
15-minute GP appointment £70
30-minute GP appointment £100
45-minute GP appointment £150
Online GP appointment From £55
GP home visit From £255
GP membership From £29.99 per month

Tests, reports and extra services are priced separately and confirmed before booking. See our pricing page for the current figures.

Clinic, online or at home

  • In clinic: a hot, swollen joint needs examining, so a clinic appointment is the best choice for a first attack. Our same-day GP page explains how same-day and next-day slots work.
  • Online: an online GP appointment suits follow-up reviews, medication questions and discussing results. If the GP decides you need a physical examination, the consultation can lead to a home visit.
  • At home: a GP home visit helps if pain or immobility makes travel difficult.

Specialist Care for Joint Inflammation at Our Lurgan Clinic

Some causes of a hot, swollen joint need more than a GP appointment. Our specialist team at Friends Medical Service offers these services at the Lurgan clinic:

  • Rheumatology and gout care: the Private Gout Clinic provides a specialist review of your history and the affected joint. It includes a uric acid blood test and a joint ultrasound where helpful. Treatment covers flare relief, with a joint injection where appropriate, plus a long-term prevention plan. No GP referral is needed. A consultation starts from £230 plus a £25 admin fee. A review consultation costs £130. Meet the wider team on our consultants page.
  • Joint and soft tissue scans: private ultrasound scans include musculoskeletal scans of joints and soft tissue, from £230. A clinical referral is required. A £70 referral appointment is available if you do not already have one.
  • Ultrasound-guided injections: ultrasound-guided cortisone injections target inflammation and joint pain that has not improved with rest or physiotherapy. A clinical referral is required. The injection is not a cure, and relief lasts from several weeks to several months. Our article on whether ultrasound-guided injections are painful explains what to expect.
  • Blood tests: several health check panels include Muscle & Joint Health and Infection & Inflammation sections.

Reducing the Risk of Repeat Flare Ups

When gout is the cause, lifestyle changes lower the chance of another attack:

  • Lose weight gradually and avoid crash dieting
  • Limit alcohol and sugary drinks
  • Stay well hydrated
  • Eat a balanced diet
  • Exercise regularly without straining the joint
  • Stop smoking

Your GP can also review whether a long-term medicine to lower uric acid is worth discussing. The review can include whether any of your current medicines are contributing to the joint pain. Patients who want regular reviews can look at our GP membership plans, which include GP appointments online or at the clinic.

Frequently Asked Questions

Why is my joint hot, red and swollen?

Heat, redness and swelling mean the joint is inflamed. Gout is a common cause, particularly when the big toe is affected and the pain arrived suddenly. Other causes include pseudogout, injury, rheumatoid arthritis and joint infection. Because the causes need different treatment, joint pain with a hot, swollen joint deserves a medical assessment.

What does gout feel like?

Gout causes sudden, severe pain in a joint with hot, red and swollen skin. The joint is extremely tender to touch. Attacks last one to two weeks without treatment. The big toe is the most common site.

How do you know if you have gout?

Symptoms give strong clues, but they are not enough to confirm gout. Joint infection and other types of arthritis can look the same. A GP will ask about the timing of the attack and your medicines and health history and will examine the joint before suggesting the next step.

Can gout affect the hands and fingers?

Yes. Gout in the hands and fingers produces the same hot, red, swollen joint. Gout in the big toe and foot is more common. Wrists and elbows can also be involved.

Does a gout flare up go away on its own?

A single flare up eases within one to two weeks without treatment. The problem behind it, too much uric acid in the blood, remains, so further attacks can follow and can last longer. A GP can advise on treating attacks and reducing the chance of them returning.

When is a swollen joint an emergency?

Sudden severe pain in one joint with swelling, redness, heat and difficulty moving it needs urgent medical help, especially with a fever or feeling unwell. Ask for an urgent GP appointment or go to your nearest emergency department. Call 999 in an emergency.

Can I see a rheumatologist privately without a GP referral?

Yes for gout. Our Private Gout Clinic does not require a GP referral for a consultation. For other joint problems, our GPs can arrange a referral where it would change the plan.

Can I get a joint scan or injection privately?

Yes. Musculoskeletal ultrasound scans and ultrasound-guided injections are available through Friends Medical Service. Both need a clinical referral from a GP or another clinician. If you do not have one, a £70 referral appointment is available. An ultrasound and guided injection overview is on our main website.

Should I use ice or heat on a swollen joint?

A cool pack held against the joint for up to 20 minutes at a time can ease the discomfort of a gout flare up. Wrap it in a cloth first. Do not apply heat to a joint that is already hot and swollen.

Can I see a private GP in Lurgan on the same day?

Same-day and next-day appointments are available at our Lurgan clinic, including slots on Saturday mornings and Tuesday evenings as well as during usual typical business hours, i.e. Monday to Friday, 9 am to 5 pm. Availability depends on the day’s list. The clinic will offer the next day or an online GP appointment if the list is full. Our Lurgan area page has further details on our address and opening hours.

Further Reading

If you’d like to read more from independent, patient-focused sources before your consultation, the following are reputable places to start:

These sources supplement a clinical assessment but do not replace one.

Final Thoughts

Joint pain with swelling, redness and heat is a signal to act, whether the cause turns out to be a gout flare up or a more serious problem. A first attack or a flare that is not settling deserves an examination. Sudden severe pain with a fever or an immobile joint needs urgent help today.

Our private GP clinic in Lurgan welcomes patients from Craigavon, Belfast, Lisburn and the wider area. Patients travelling from the Republic of Ireland are also welcome. Our cross-border patients page explains the process. Our Why Choose a Private GP in Northern Ireland article explains what the service offers alongside your NHS GP.

Ready to have your joint checked? Book a GP appointment online or contact our clinic to ask a question before you book. For consultant-led gout care, visit our Private Gout Clinic page.