hives risks and benefits for patients

Overview

Hives, also called urticaria, are raised, itchy bumps on the skin. They happen when your body releases a chemical called histamine, which causes small blood vessels to leak fluid. That fluid builds up under the skin, creating red or skin-colored welts that can sting or burn.

Yes. Hives are very common. About 1 in 5 people will have hives at some point in their life.

Hives can affect anyone, at any age. Acute hives (lasting less than six weeks) are more common in children and young adults. Chronic hives are more common in women in their middle years, but they can occur in anyone.

Symptoms

Common symptoms

• Raised, red or skin-colored welts on the skin
• Itching that can range from mild to severe
• Welts that turn white briefly when pressed
• Welts that appear in batches, change shape, or move around
• A burning or stinging feeling in the affected area

Symptoms in children

• Welts that appear suddenly, often after a viral illness or eating a new food
• Itching that may make children restless or scratch more
• Deeper swelling under the skin, often around the eyes, lips, or hands, in some cases

Symptoms in older adults

• Skin may be more fragile, so scratching can cause bruising or damage
• Chronic hives may be linked to other health conditions, such as thyroid problems
• Medicines are a more common trigger in older adults, so be alert if hives start after a new prescription

Causes

Main causes

• Infections, especially viral infections like colds
• Certain foods, such as nuts, eggs, shellfish, or milk
• Medicines, like antibiotics or pain relievers
• Insect stings or bites
• Pressure on the skin from tight clothing or a long walk
• Extreme temperatures, either hot or cold
• Stress or emotional upset

Risk factors

• A history of allergies, eczema, asthma, or hay fever
• Recent illness or infection
• Exposure to new foods, medicines, or environmental triggers
• High stress levels or poor sleep

When to see a doctor

See a doctor urgently if:

• Any signs of a serious allergic reaction — see the emergency section above
• Hives with a fever or joint pain
• Hives that show signs of infection, such as red streaks, pus, or increasing pain
• Hives that do not improve after a few days despite self-care and over-the-counter remedies

Book a routine appointment if:

• Hives that keep coming back for more than a few weeks
• Hives that interrupt your sleep or daily activities
• Hives that make you anxious or affect your quality of life

Diagnosis

Your doctor will usually diagnose hives by looking at your skin and asking about your symptoms, recent activities, and health history. In many cases, no tests are needed.

Tests that may be done

• Allergy tests (skin prick or blood tests) if a specific food or other allergen is suspected
• Blood tests to check for underlying conditions if hives are chronic and unexplained
• A skin biopsy (taking a tiny sample of skin) if the diagnosis is not clear

What to expect at your appointment

Your doctor may ask you to keep a diary of your hives, noting when they appear and what you ate, did, or took beforehand. Most acute hives settle within a few days. If hives persist, your doctor may refer you to a dermatologist or allergy specialist.

Treatment

Treatment aims to relieve itching and help you avoid triggers. For many people, simple self-care measures are enough. If symptoms continue, your doctor may recommend a non-drowsy antihistamine or another medicine that helps calm the immune system. Always talk to your doctor or pharmacist about what is right for you.

Self-care at home

• Apply a cool, damp cloth to itchy areas or take a cool bath.
• Wear loose, soft clothing and avoid tight waistbands or straps.
• Use fragrance-free moisturisers to keep your skin comfortable.
• Keep your home cool and avoid hot showers.
• Gently pat your skin dry instead of rubbing.
• Try relaxation techniques, like slow breathing, to reduce stress.

Medical treatments

Doctors often suggest non-drowsy oral antihistamines during the day, and sometimes a different antihistamine at night if itching disturbs sleep. For more severe cases, a short course of a prescription anti-inflammatory medicine may be used. Never take more than the recommended dose, and check with your doctor or pharmacist before combining any products.

When is surgery considered?

Surgery is not used to treat hives.

Living with this condition

Living with hives can be frustrating, especially when the cause is unclear. Keeping a simple diary of your meals, activities, stress levels, and when hives appear can help you spot patterns. The goal is to keep symptoms under control and your skin comfortable.

Lifestyle tips

• Identify and avoid personal triggers where possible.
• Take cool showers instead of hot baths.
• Use gentle, fragrance-free skincare products.
• Keep your nails short to reduce skin damage from scratching.
• Plan relaxing activities, such as walking, reading, or talking with friends.

Diet and exercise

There is no special diet that cures hives. If you notice a food seems to bring on hives, try writing down what you ate and talk to your doctor or a dietitian. Exercise itself is not a cause, but heat and heavy sweating can make hives worse for some people. Staying cool and hydrated while active can help.

Mental health and emotional wellbeing

It is normal to feel frustrated, embarrassed, or anxious when hives appear. Chronic itching can disturb sleep and affect your mood. If you feel low or worried for more than a few weeks, please speak to your doctor or a mental health professional. You do not have to cope alone.

Prevention

Hives cannot always be prevented, but you can lower the chance of an episode by avoiding known triggers. This might mean staying away from certain foods or medicines, taking steps to prevent insect bites, or managing stress. If you have chronic hives, your doctor can help you create a plan to reduce flare-ups.

Vaccines

There is no vaccine to prevent hives.

Screening programmes

There is no routine screening test for hives.

Complications

If left untreated

• Scratching can break the skin and lead to bacterial skin infections (such as weeping sores or spreading redness).
• A severe allergic reaction involving the throat or lungs can be life-threatening and requires emergency care.
• Long-term hives can cause sleep problems, fatigue, and emotional distress.

Long-term outlook

The outlook for hives is very good. Most acute cases clear up within a few days or weeks. Even chronic hives often improve over time, and most people find effective ways to control symptoms with the help of their healthcare team. While hives are uncomfortable and sometimes inconvenient, they are usually not serious.

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