Chronic Urticaria (Hives): Causes, Treatment, and Living with the Condition

Chronic urticaria, or chronic hives, is defined as the recurrent appearance of itchy, raised welts (wheals) on the skin — often accompanied by deep swelling (angioedema) — persisting for more than six weeks. While not life-threatening in most cases, it can significantly impact quality of life, affecting sleep, work, and emotional wellbeing.

What Is Chronic Urticaria?

Each individual wheal typically:

Appears suddenly as a raised, itchy area of skin
Varies in size from a few millimetres to several centimetres
Has a pale centre surrounded by a red flare
Fades completely within 24 hours but is immediately replaced by new wheals
May occur anywhere on the body

Angioedema — swelling in the deeper layers of skin — accompanies urticaria in approximately 40% of cases, commonly affecting the lips, eyelids, tongue, hands, feet, and genitals.

Types of Chronic Urticaria

Chronic Spontaneous Urticaria (CSU): The most common form. Wheals appear without identifiable external triggers. Approximately 45% have an autoimmune component.
Chronic Inducible Urticaria: Triggered by specific physical stimuli including cold, heat, pressure, vibration, sunlight, water, or exercise.
Delayed Pressure Urticaria: A subtype where deep, painful swelling appears 3–8 hours after sustained pressure.
Cholinergic Urticaria: Triggered by increased body temperature from exercise, hot showers, or emotional stress.

Causes and Triggers

In most chronic urticaria cases, no clear cause is found. However, several factors are associated:

Autoimmune causes: Approximately 45% of CSU patients have autoantibodies that activate mast cells, causing histamine release.
Infections: Some cases are associated with chronic bacterial infections (H. pylori), viral infections, or parasites.
Physical triggers: Cold, heat, pressure, exercise, sunlight, or water.
Medications: NSAIDs (like aspirin or ibuprofen) and ACE inhibitors are the most common drug triggers.
Foods: Unlike food allergies, specific foods rarely cause chronic urticaria. However, high-histamine foods may worsen symptoms in some patients.

Everyday Management Strategies

Identify and avoid triggers — keep a symptom diary to note when and where hives appear and what preceded them.
Wear loose, comfortable clothing — tight clothing and heat can worsen symptoms.
Keep skin cool — cool showers and avoiding overheating can provide relief.
Stress management — stress is a recognised trigger; mindfulness, yoga, and adequate sleep help.
Avoid NSAIDs and aspirin if these are identified as triggers.

Treatment Options

First-Line: Second-Generation Antihistamines

Modern non-sedating antihistamines (cetirizine, loratadine, fexofenadine, desloratadine) are the foundation of treatment. They are generally safe and well-tolerated for long-term use.

Dosing: International guidelines support increasing to up to 4x the standard dose if symptoms persist after 2–4 weeks of standard dosing.

Second-Line: Adding Complementary Agents

For patients not responding to high-dose antihistamines, doctors may add:

Montelukast (a leukotriene receptor antagonist) — particularly helpful for pressure urticaria
H2 antihistamines (famotidine) — sometimes added to H1 antihistamines

Third-Line: Omalizumab (Biologic Therapy)

Omalizumab (brand name: Xolair) is a monoclonal antibody targeting IgE, approved for antihistamine-refractory chronic spontaneous urticaria.

Administered as a subcutaneous injection every 4 weeks (300mg)
Many patients see significant improvement within 2–4 weeks
After 12–18 months of adequate control, doctors may attempt a gradual taper
Well-tolerated with minimal side effects

Fourth-Line: Immunosuppressants

For patients who do not respond to omalizumab, options include cyclosporine or other immunosuppressants under specialist supervision.

Corticosteroids

Short courses of oral corticosteroids (prednisolone) may be used for severe flares but cannot be maintained long-term due to side effects.

Knowing Your Dermatology Care Team

Realistic Expectations and Long-Term Outlook

Approximately 50% of patients achieve remission within one year
70–80% achieve remission within five years
Some patients have symptoms lasting a decade or longer
The course is unpredictable — symptoms may improve, worsen, or remain stable without apparent reason
Modern treatments (particularly omalizumab) can provide excellent control even if they do not cure the condition

Frequently Asked Questions

How long does chronic urticaria last? By definition it persists beyond 6 weeks, but remission occurs in most patients eventually — typically within 1–5 years.

Can it be permanently cured? No established cure exists. However, spontaneous remission occurs in most patients over time.

Is it contagious? No. Chronic urticaria results from internal immune dysfunction, not an infectious agent.

Can I exercise with chronic urticaria? Most patients can exercise safely. If exercise is a trigger (cholinergic urticaria), pre-treating with antihistamines and exercising in cool environments can help.

Does diet play a role? Unlike food allergies, specific foods rarely cause chronic urticaria. However, high-histamine foods (aged cheeses, fermented foods, shellfish, alcohol) may worsen symptoms in some patients.

Medical Expert Review

Reviewed by: Dr. Ayesha Rahman, MBBS, FCPS (Dermatology) — Consultant Dermatologist, 15 years of clinical experience in dermatology and allergic skin conditions.

Editorial Review Date: January 2026 | Next Review: January 2027

Disclaimer: This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult with a qualified healthcare provider regarding any medical condition. If you experience difficulty breathing, throat swelling, or signs of anaphylaxis, seek immediate emergency medical care.