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What to do if…
you develop sudden swelling and pain in a joint and it feels hot to the touch

Short answer

Treat a sudden hot, swollen, painful joint as urgent: get same-day medical assessment via NHS 111 or an urgent GP appointment (or A&E if you’re very unwell or can’t use the joint).

Do not do these things

  • Do not delay seeking help if the joint is hot, swollen, and very painful, especially if it started suddenly.
  • Do not take leftover antibiotics or someone else’s prescription (it can delay correct diagnosis and testing).
  • Do not apply heat, deep massage, or try to “work it loose” through severe pain.
  • Do not try to drain, puncture, or squeeze anything around the joint.
  • Do not keep weight-bearing on the joint if walking/using it sharply increases pain.

What to do now

  1. Get urgent help today

    • Contact NHS 111 (phone or online) and say: “sudden hot, swollen, painful joint.”
    • If you can access it quickly, ask your GP practice for an urgent same-day appointment.
    • Go to A&E now (or call 999/112 if you’re too unwell to travel safely) if any of these apply:
      • you feel very unwell (confused, faint, rapidly worsening)
      • you have a high temperature or feel hot, cold, or shivery
      • the pain is so severe you can’t move or use the joint
      • you have a prosthetic (replacement) joint, are immunosuppressed, recently had a joint injection/surgery, or there’s spreading redness around the joint

  2. Protect the joint while you arrange care

    • Rest the joint; stop the activity you were doing.
    • If it’s a leg joint, avoid walking on it; if it’s an arm/hand joint, keep it supported.
    • Remove rings, watches, or tight items near the swollen area early (swelling can increase).
    • If it helps, use a cool pack wrapped in cloth for 10–15 minutes at a time (don’t put ice directly on skin).

  3. Note key details (takes 60 seconds)

    • When it started (rough time), which joint, and whether it came on suddenly.
    • Any fever (if you can, take your temperature).
    • Any recent injury, skin break, bite, infection elsewhere, joint injection, or surgery.
    • Your key conditions/meds (e.g., diabetes, steroids, immune-suppressing meds, blood thinners).
    • Keep these notes ready for 111/GP/A&E.

  4. Pain relief, only if safe for you

    • If you can usually take it, consider paracetamol as directed on the packet.
    • Only consider an NSAID (like ibuprofen) if you usually tolerate it and you’ve not been told to avoid it (for example due to kidney disease, stomach ulcer/bleeding history, or certain blood thinners). If unsure, ask NHS 111, your GP practice, or a pharmacist.

What can wait

  • You do not need to decide whether it’s gout, infection, or “just a sprain” right now — the priority is same-day assessment.
  • You do not need to research diets, long-term arthritis plans, or supplements today.
  • You do not need to push through exercises or “test it” repeatedly.

Important reassurance

Sudden hot, swollen joint pain is alarming because it can change quickly and limit movement. Getting assessed urgently is a steady, sensible move — it’s about ruling out serious causes early and protecting the joint.

Scope note

These are first steps for the next few hours. Diagnosis (including whether joint fluid needs testing) and treatment decisions belong to a clinician assessing you in person.

Important note

This guide is general information, not a diagnosis. If you are rapidly worsening, very unwell, or cannot safely get to care, seek emergency help.

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