Hives
Hives are raised, itchy welts on the skin caused by histamine release. They can appear quickly, change shape and location, and usually individual welts fade within a day, though new ones may keep appearing.
Table of Contents
Quick Facts
- Medical name: Urticaria
- ICD-10: L50
When to Call 911
Call 911 if hives appear with:
- Difficulty breathing or wheezing
- Swollen lips, tongue, or throat
- Dizziness or fainting
- Rapid heartbeat
Self-Care
- Non-sedating antihistamines (cetirizine, fexofenadine, loratadine)
- Cool compresses
- Avoid known triggers
- Loose clothing
When to See a Doctor
- Hives lasting more than a few days
- Recurrent episodes
- Hives with angioedema or systemic symptoms
- Hives interfering with sleep or daily life
Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about a medical condition. If you are experiencing a medical emergency, call your local emergency number immediately.
References
- AAAAI. Hives Information.