Skin
Urticaria (Hives)
Itchy raised welts that appear and settle, sometimes with swelling.
What is Urticaria (Hives)?
Urticaria, commonly called hives, produces itchy raised welts that typically appear suddenly and settle within hours, only to recur elsewhere. Deeper swelling of the lips or eyelids can accompany it.
Symptoms
- Raised, itchy welts of varying size
- Individual lesions that fade within 24 hours
- Swelling of lips, eyelids or hands in some episodes
- Symptoms that fluctuate through the day
Common Causes
- Infections, especially viral
- Food, medication or insect-related triggers
- Physical triggers such as pressure, heat or cold
- Autoimmune mechanisms in chronic cases
- Often no identifiable cause in long-standing urticaria
Who May Be Affected
Urticaria can affect anyone. Short-lived episodes are common; chronic urticaria lasting more than six weeks is less frequent and needs assessment.
Diagnosis
Diagnosis is clinical, supported by a careful history. Investigations may be advised in chronic cases to look for contributing factors.
Treatment Options
- Antihistamine therapy, with dose adjustment as advised
- Identification and avoidance of clear triggers
- Additional treatment for resistant chronic urticaria
- Guidance on when urgent care is required
Prevention & Skincare Advice
- Keep a symptom and trigger diary
- Avoid known triggers where identified
- Avoid unnecessary self-medication
When to See a Dermatologist
Seek urgent medical care if hives are accompanied by breathing difficulty, throat tightness or dizziness; otherwise consult a dermatologist if hives recur for more than a few weeks.
Frequently Asked Questions
Information on this website is for education only and does not replace an in-person consultation with a qualified dermatologist. Treatment suitability is determined after consultation.
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