Urticaria is the medical word for Hives. It describes an itchy, raised rash that can happen with allergies, medicines, infections, or other triggers. In first aid, the practical question is whether the rash is happening by itself or with more serious symptoms.
What does urticaria mean?
Urticaria is the clinical term for hives. People may also describe it as:
- welts
- wheals
- a raised itchy rash
- nettle rash
The skin changes may come and go, move around, or join into larger patches.
Is urticaria the same as hives?
Yes. Urticaria and hives mean the same kind of rash.
The everyday term is usually Hives, while urticaria is more common in medical notes or health information.
What can cause urticaria?
Urticaria can be linked to:
- Allergic Reaction
- foods
- medicines
- infections
- insect stings or bites
- heat, cold, or pressure on the skin
Sometimes there is no clear cause.
When is urticaria more serious?
The rash itself is not usually the emergency. The emergency concern is whether urticaria is happening with signs of a severe allergic reaction.
Call 000 in Australia if urticaria happens with:
- swelling of the tongue or throat
- wheeze or trouble breathing
- dizziness or collapse
- signs of Anaphylaxis
If the person has a prescribed Adrenaline Auto-Injector and severe allergy signs are present, help them use it immediately.
If you know the brand, follow the correct steps for EpiPen or Anapen. The medicine inside is Epinephrine.
Which page should you read first?
For the main plain-English explanation and practical first aid overview, read Hives.
For the broader allergy pathway, read:
Summary
Urticaria is the medical term for hives. It describes an itchy, raised rash that may happen with allergies or other triggers. In first aid, the key step is not just naming the rash but checking for serious symptoms such as breathing trouble, throat swelling, dizziness, or collapse.
Sources reviewed
- Healthdirect: hives (urticaria)
- ASCIA: anaphylaxis information and current device links
- Triple Zero: official emergency calling guidance
Reviewed against current Australian allergy, first aid and emergency guidance by the First Aid Glossary Editorial Team. This article is general information and does not replace a person’s current ASCIA Action Plan, device instructions, emergency-operator directions, professional medical advice or hands-on first aid training.
