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What to do if…
you notice increasing redness, pain or swelling around an IV site after an infusion or injection

By PanicStation.org Reviewed under our editorial policy Last reviewed: USA guide

Short answer

Call the clinic/infusion center that treated you (or your doctor’s on-call line) now and describe the worsening redness/pain/swelling; go to the ER sooner if symptoms are spreading or you feel sick.

Do not do these things

  • Do not assume worsening redness/pain/swelling is “normal” and wait it out.
  • Do not massage or firmly rub the area.
  • Do not apply heat or ice unless your care team tells you to (management differs depending on what leaked and what medication was used).
  • Do not flush or use the IV/PICC/port if the site is painful, red, swollen, or leaking.
  • Do not try to drain fluid, pop blisters, or squeeze the site.

What to do now

  1. If you’re still at the facility: tell staff immediately so they can assess the site and, if needed, stop the infusion and manage the IV.
  2. If you’re already home: call the infusion center/doctor who treated you (use your discharge paperwork, patient portal, or after-hours number). Say: “My IV site is becoming more red/painful/swollen after an infusion/injection. I’m concerned about infection, phlebitis, or infiltration/extravasation.”
  3. Decide if this is emergency-level right now:
    • Call 911 for breathing problems, severe chest pain, fainting/collapse, new confusion, or other severe symptoms.
    • Go to the ER now if you have fever or chills, pus/drainage, rapidly spreading redness, red streaks, severe or escalating pain, new numbness/weakness, blistering, or the skin looks very tight, pale/blue, or unusually cold.
    • Consider urgent care only if symptoms are mild, localized, and stable (not spreading, no fever/chills, no blistering, no numbness/weakness) and you cannot quickly reach your treating team.
  4. Do a quick “track it” check (helps clinicians):
    • Use a pen to mark the outer edge of redness and write the time.
    • Take one clear photo and note whether pain is at the puncture site or tracking along the vein.
  5. Protect the arm while you’re arranging care:
    • Rest and support the limb; remove rings/watches if there’s swelling.
    • Keep any dressing clean/dry; don’t wrap anything tightly.
  6. If you have a PICC/central line/port: treat new redness, swelling, warmth, pain, or discharge at the site — or fever/chills — as “call your provider right away,” and use the ER if you can’t be promptly assessed.

What can wait

  • You don’t need to figure out the exact cause (infection vs irritation vs a leak) before seeking care.
  • You don’t need to apply creams/ointments or try home “fixes” first.
  • You don’t need to decide about reporting/complaints today—prioritize evaluation and symptom safety.

Important reassurance

It’s understandable to feel alarmed when an IV site changes after you leave. Many IV-site problems are treatable, and calling promptly when symptoms are worsening helps prevent complications.

Scope note

This is first-step guidance for the first hours after noticing worsening redness/pain/swelling at an IV or injection site. Follow-up treatment must be directed by clinicians who can examine you and review what medication/fluids were used.

Important note

This guide is general information, not medical advice or a diagnosis. If you feel significantly unwell, symptoms are rapidly worsening, or you’re unsure what level of care you need, seek urgent medical attention.

Additional Resources

About this guide

PanicStation.org guides are written as plain-English first steps, then reviewed for clarity, jurisdiction, and source quality. If you notice an error, outdated information, unclear wording, or a broken link, please contact us.

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