Hives (Urticaria) - WellAlly
Comprehensive guide to hives causes and treatments. Learn about urticaria and when to seek emergency care.
🚨 Medical Emergency Warning
Some symptoms may require urgent medical evaluation. Know when to seek emergency care.
Medical Disclaimer
This content is for informational purposes only and does not substitute professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical concerns. In case of emergency, call 911 or your local emergency services immediately.
What It Feels Like
Hives appear as: • Red, itchy welts on skin • Raised, swollen patches • Can burn or sting • Variable sizes from small to large • Can appear anywhere on body
Types & Categories
Acute Hives
Last less than 6 weeks, often allergic.
Chronic Hives
Last more than 6 weeks, cause often unknown.
Physical Urticaria
Triggered by heat, cold, pressure, or sunlight.
Angioedema
Swelling deeper in skin, often around eyes and lips.
Common Causes
Allergic Reaction
Food, medication, or environmental allergens.
Viral Infection
Cold, flu, or other viruses.
Stress
Can trigger or worsen hives.
Temperature Changes
Heat, cold, or water exposure.
Autoimmune
Immune system attacking skin.
Risk Factors
Warning Signs & Emergency Symptoms
Warning Signs
⚠️ Hives with difficulty breathing
⚠️ Swelling of face, lips, or tongue
⚠️ Dizziness or fainting
⚠️ Hives covering most of body
🚨 Call 911 For:
! Difficulty breathing or swallowing
! Swelling of throat or tongue
! Wheezing
! Loss of consciousness
! Anaphylaxis
Immediate Actions While Waiting for Help
Self-Care & Home Management
How Doctors Diagnose This Symptom
Treatment Options
Related Medications
When to See a Doctor
Hives lasting more than a few days
Recurring hives
Hives with angioedema
Severe symptoms
Unknown trigger
Prevention & Lifestyle Changes
Prevention Tips
✓ Avoid known allergens
✓ Keep a symptom diary
✓ Manage stress
✓ Avoid extreme temperatures
✓ Be cautious with new foods/medications
Lifestyle Changes
→ Identify and avoid triggers
→ Stress management
→ Wear loose clothing
→ Temperature control
→ Dietary modifications
Related Medical Conditions
Allergies
Immune system reaction
Related Symptoms
Itchy Skin (Pruritus)
Learn more →
Skin Rash
Learn more →
Frequently Asked Questions
What triggers hives?
Common triggers include foods (nuts, shellfish, eggs), medications (antibiotics, NSAIDs), insect stings, latex, pollen, animal dander, physical factors (heat, cold, pressure), stress, and infections.
When are hives an emergency?
Seek immediate emergency care if hives are accompanied by difficulty breathing, swelling of the face, lips, tongue, or throat, wheezing, dizziness, fainting, or if you have a known severe allergy.
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Trust & Medical Review
This content is medically reviewed for accuracy and reliability
Medically Reviewed
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Expert Team
Our content is created by a team of licensed physicians, nurses, and medical writers to ensure accuracy, clarity, and practical utility.
Evidence-Based
All health information is based on peer-reviewed research, clinical guidelines, and recommendations from authoritative health organizations like CDC, WHO, and Mayo Clinic.
Regularly Updated
January 2025
We regularly review and update our content to reflect the latest medical research and clinical practices.
References & Sources
Centers for Disease Control and Prevention (CDC)
National Institutes of Health (NIH)
Mayo Clinic
World Health Organization (WHO)
The information provided on this website is for general informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical concerns. In case of emergency, call emergency services immediately.
Medical Review Team
Dr. Michael Rodriguez, MD
Internal Medicine Physician
Internal Medicine
Dr. Rodriguez is a board-certified internist with expertise in primary care and preventive medicine.
Remember: In case of a medical emergency, call 911 immediately.
This page is for informational purposes only and does not replace professional medical advice.
Emergency?
Call 911 immediately for severe symptoms.