Chronic Hives: Symptoms, Causes & Treatment

Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: September 2026

Hives — also called urticaria (ur-tih-KAR-e-uh) — are a skin reaction that causes itchy welts. When welts last for more than six weeks and return often over months or years, the condition is called chronic hives. Often, the cause isn't clear: the welts result from immune system chemicals such as histamine released into the bloodstream. Each individual welt typically fades within 24 hours, but new ones keep appearing. Chronic hives can seriously interfere with sleep and daily life, and for many people nonprescription antihistamines provide relief. When welts come with dizziness, trouble breathing, or swelling of the tongue, lips, mouth, or throat, it is part of a severe allergic reaction (anaphylaxis) — seek emergency care immediately.

Quick Answer: What Are Chronic Hives?

Chronic hives are itchy, raised welts that persist for more than six weeks and recur over months or years.

• Definition: itchy welts (weals) lasting more than 6 weeks, returning often — each welt usually fades within 24 hours

• Appearance: batches of welts anywhere on the body; red, purple, or skin-colored depending on your skin tone; varying sizes and shapes

• Cause: immune chemicals such as histamine released into the bloodstream; often the specific cause is unclear

• Triggers: heat or cold, sunlight, vibration, pressure on skin, stress or fatigue; linked medical conditions include thyroid disease, infection, allergy, cancer, and vasculitis

• Danger sign: chronic hives themselves don't cause anaphylaxis — but hives with dizziness, trouble breathing, or tongue/lip/mouth/throat swelling are a medical emergency

• First treatment: nonprescription anti-itch antihistamines

• If those fail: prescription medicines (montelukast, doxepin, ranitidine, omalizumab) or immune-calming medicines for resistant cases

• See a doctor if hives are severe or last more than a few days

What Are Chronic Hives?

Hives — also called urticaria (ur-tih-KAR-e-uh) — is a skin reaction that causes itchy welts. Chronic hives are welts that last for more than six weeks and return often over months or years. Often, the cause of chronic hives isn't clear.

The welts often start as itchy patches that turn into swollen welts that vary in size. These welts appear and fade at random as the reaction runs its course. Each individual welt typically lasts less than 24 hours — but new welts keep forming, which is what makes the condition chronic.

Chronic hives can be very uncomfortable and interfere with sleep and daily activities. For many people, anti-itch medicines called antihistamines provide relief.

Chronic Hives Symptoms

Symptoms of chronic hives include:

• Batches of welts (weals): can arise anywhere on the body

• Welts vary in color: might be red, purple, or skin-colored, depending on your skin color

• Changing size and shape: welts vary in size, change shape, and appear and fade repeatedly

• Itchiness (pruritus): can be intense

• Painful swelling (angioedema): swelling around the eyes, cheeks, or lips

• Flares: triggered by heat, exercise, or stress

• Long duration: symptoms persist for more than six weeks and recur often, sometimes for months or years

When to See a Doctor

See a healthcare professional if you have severe hives or hives that last for more than a few days.

Emergency: Anaphylaxis

Chronic hives do not put you at sudden risk of a serious allergic reaction called anaphylaxis. However, if you get hives as part of a severe allergic reaction, seek emergency care immediately.

• Dizziness: feeling faint, lightheaded, or unsteady

• Trouble breathing: wheezing, shortness of breath, tight chest

• Swelling of the tongue, lips, mouth, or throat: rapidly progressing facial or airway swelling

If hives occur together with any of these symptoms, call for emergency help right away — do not wait to see whether the reaction settles.

Causes: What Causes Chronic Hives?

The welts that come with hives are caused by the release of immune system chemicals, such as histamine, into your bloodstream. It's often not known why chronic hives happen or why short-term hives sometimes turn into a long-term problem.

The skin reaction may be triggered by:

• Heat or cold: temperature changes on the skin

• Sunlight: direct sun exposure

• Vibration: caused by activities such as jogging or using lawn mowers

• Pressure on the skin: such as from a tight waistband

• Medical conditions: thyroid disease, infection, allergy, and cancer

Risk Factors

In most cases, chronic hives is not predictable. In some people, the risk of chronic hives increases if they have certain medical conditions.

• Infection: any underlying infection can raise risk

• Thyroid disease: linked to ongoing skin reactivity

• Allergy: heightened immune sensitivity

• Cancer: underlying malignancy may play a role

• Vasculitis: swelling of the blood vessels

Complications

Chronic hives don't put you at sudden risk of a serious allergic reaction, called anaphylaxis. If you do get hives as part of a severe allergic reaction, seek emergency care. Symptoms of anaphylaxis include dizziness, trouble breathing, and swelling of the tongue, lips, mouth, or throat.

The more common "complications" of chronic hives are quality-of-life impacts: the welts can interfere with sleep, work, and other daily activities, which is itself a strong reason to seek treatment.

How Are Chronic Hives Diagnosed?

To diagnose chronic hives, your healthcare professional will likely talk with you about your symptoms and look at your skin. One of the telling features of chronic hives is that the welts come and go at random, with each spot usually lasting less than 24 hours.

You might be asked to keep a diary to keep track of:

• Your activities: may reveal physical triggers (heat, vibration, pressure)

• Medicines, herbal remedies, or supplements: a medicine can trigger welts

• What you eat and drink: food exposures worth tracking

• Where hives appear and how long a welt takes to fade: includes whether it leaves a bruise or other mark

• Whether hives come with painful swelling: flags angioedema

You also may need blood tests to determine the cause of your symptoms. An accurate diagnosis will guide your treatment. If needed to clarify the diagnosis, your healthcare professional might do a skin biopsy — a procedure to remove a sample of tissue for testing in a lab.

Chronic Hives Treatment

Treatment for chronic hives often starts with nonprescription anti-itch medicines, called antihistamines. If these don't help, your healthcare professional might suggest one or more prescription-strength medicines.

Prescription Medicines

• Montelukast: Singulair

• Doxepin: Silenor, Zonalon

• Ranitidine: —

• Omalizumab: Xolair

Immune-Calming Medicines

For chronic hives that resist these treatments, your healthcare professional might prescribe a medicine that can calm an overactive immune system:

• Cyclosporine: Neoral, Sandimmune

• Tacrolimus: Prograf, Protopic, others

• Hydroxychloroquine: Plaquenil

• Mycophenolate: Cellcept

Self-Care: 8 Tips That May Help

Chronic hives can go on for months and years. They can interfere with sleep, work, and other activities. The following self-care tips may help you manage your condition:

• Avoid triggers. These can include foods, medicines, pollen, pet dander, latex, and insect stings. If you think a medicine caused your welts, stop using it and contact your healthcare professional. Some studies suggest that stress or fatigue can trigger hives.

• Use a nonprescription anti-itch medicine. Nondrowsy antihistamines may ease itching: loratadine (Alavert, Claritin), famotidine (Pepcid AC), cimetidine (Tagamet HB), nizatidine (Axid AR), cetirizine (Zyrtec Allergy). If itching is worse at bedtime, try a drowsy antihistamine such as diphenhydramine (Benadryl). Check with your healthcare professional before taking any of these if you are pregnant or breastfeeding, have a long-term medical condition, or take other medicines.

• Apply cold. Cover the itchy area with a cold washcloth or rub an ice cube over it for a few minutes.

• Take a comfortably cool shower or bath. Sprinkling bath water with baking soda or oatmeal powder may relieve itching in the short term.

• Apply an anti-itch cream or lotion. Try a cream with menthol for a soothing effect.

• Wear loose, smooth-textured cotton clothing. Avoid clothing that's rough, tight, scratchy, or made from wool.

• Protect your skin from the sun. Liberally apply sunscreen about a half hour before going outdoors; seek shade when outdoors.

• Track your symptoms. Keep a diary of when and where hives occur, what you were doing, and what you were eating — this may help you and your healthcare professional identify your trigger.

Preparing for Your Appointment

You'll likely start by seeing your primary healthcare professional. Or you may be referred to an allergy specialist or a doctor who specializes in the diagnosis and treatment of skin conditions — called a dermatologist.

What You Can Do

Make these lists before your visit: your symptoms and when they occurred and how long they lasted; all medicines, including vitamins, herbs, and supplements — even better, take the original bottles with a list of doses and directions; and a written list of questions to get through during the visit.

• What is likely causing my symptoms?

• How long will hives last?

• What kinds of tests do I need? Do these tests require any special preparation?

• What treatments are available, and which do you suggest?

• What are the alternatives to the primary approach that you're suggesting?

• Do these treatments have any side effects?

• Do I need prescription medicine, or can I use nonprescription medicine?

• Does the medicine you're prescribing have a generic version?

What to Expect From Your Doctor

Your healthcare professional is likely to ask questions about your timeline (when symptoms first appeared and how they've changed), your pattern (what makes symptoms better or worse, whether they itch, burn, or sting), your history (known allergies, prior similar reactions, family history), your exposures (new foods, laundry products, pets, medicines or supplements), and your general health (recent fevers or weight loss, and what at-home treatments you've tried).

Conclusion: Track It, Treat It, Protect Yourself

Chronic hives are frustrating precisely because they are unpredictable — welts appear and vanish at random, each one gone within a day, yet the pattern drags on for six weeks, months, or years. The good news is that most people find relief, starting with simple nonprescription antihistamines and building up through prescription and immune-calming medicines when needed. A symptom diary is your most powerful tool for finding your personal trigger, and self-care measures — cool compresses, loose cotton clothing, sun protection, and avoiding known triggers — can make daily life far more comfortable. Most important: know the difference between routine hives and an allergic emergency. Hives with dizziness, breathing trouble, or swelling of the face and throat need emergency care immediately.

If your hives are severe or have lasted more than a few days, see a healthcare professional — and start a symptom diary today to bring to your appointment. Check with your doctor before starting any antihistamine if you are pregnant, breastfeeding, have a long-term medical condition, or take other medicines.

Frequently Asked Questions (FAQ)

What are chronic hives?

Chronic hives, also called urticaria, are itchy welts that last for more than six weeks and return often over months or years. Each individual welt typically fades within 24 hours, but new welts keep appearing.

Are chronic hives contagious?

No. Chronic hives are a skin reaction caused by immune system chemicals such as histamine released into the bloodstream. They cannot spread from person to person.

Why do hives keep coming back?

It's often not known why chronic hives happen or why short-term hives turn into a long-term problem. Known triggers include heat or cold, sunlight, vibration (jogging, lawn mowers), pressure on the skin (tight waistbands), stress, and fatigue. Conditions like thyroid disease, infection, allergy, cancer, and vasculitis also raise the risk.

How do you know if hives are serious?

See a healthcare professional for severe hives or hives lasting more than a few days. Seek emergency care immediately if hives come with dizziness, trouble breathing, or swelling of the tongue, lips, mouth, or throat — these are signs of anaphylaxis, a severe allergic reaction.

What's the difference between hives and angioedema?

Hives are itchy welts on the skin. Angioedema is painful swelling, usually around the eyes, cheeks, or lips, that can accompany hives.

What's the first treatment for chronic hives?

Treatment usually starts with nonprescription anti-itch medicines called antihistamines — such as loratadine, cetirizine, famotidine, cimetidine, or nizatidine. A drowsy antihistamine like diphenhydramine may help if itching is worse at bedtime.

What if antihistamines don't work?

Your healthcare professional may suggest prescription medicines such as montelukast, doxepin, ranitidine, or omalizumab. For hives that resist these treatments, immune-calming medicines such as cyclosporine, tacrolimus, hydroxychloroquine, or mycophenolate may be prescribed.

Can I prevent chronic hives?

You can lower your likelihood of hives by avoiding known triggers — including foods, medicines, pollen, pet dander, latex, and insect stings — and by bathing and changing clothes after exposure to pollen or animals if these have triggered your hives in the past.

References

• Chronic hives — Symptoms & causes

• Chronic hives — Diagnosis & treatment

This article is for general information only and is not a substitute for professional medical advice. Seek care from a qualified healthcare professional for diagnosis and treatment decisions.