Suddenly red, swollen patches appear on your child's skin. They itch intensely, and your child is clearly uncomfortable. Could it be hives?
Hives (urticaria) is one of the most common skin reactions in children. Up to 15–25% of all children experience at least one episode during childhood. While it can look alarming, hives are usually completely harmless — and often go away on their own.
What Are Hives?
Hives are a skin reaction where raised, itchy welts appear on the skin. The welts occur because the body releases histamine and other substances that cause swelling and itching. The reaction can appear anywhere on the body.
There are two forms of hives:
- Acute hives — lasts less than 6 weeks. This is the most common form in children and is often caused by infections, allergies, or other temporary triggers.
- Chronic hives — lasts more than 6 weeks. Less common in children than adults. The cause is often unknown.
In children, acute hives are by far the most common. Most cases resolve within hours to days.
Symptoms of Hives in Children
Hives have some characteristic features that make them relatively easy to recognize:
- Raised, red welts — vary in size from a few millimeters to several centimeters
- Intense itching — the most troublesome symptom for the child
- Welts that move — they can disappear from one spot and appear in another within hours
- Pale center — welts often become pale or white in the middle when pressed
- Come and go — each individual welt rarely lasts more than 24 hours, but new ones can appear
- Can merge — small welts can grow together into larger, irregular patches
Hives in Babies
In babies and infants, hives can look slightly different. The skin is thinner, and the reaction may appear more pronounced. Babies cannot say that they itch, but you may notice they are restless, cry more than usual, or try to rub themselves against clothing and bedding.
Hives are not contagious. Your child does not need to stay home from daycare because of the rash itself, but if the cause is an infection, normal absence rules apply.
Causes of Hives in Children
In children, infections are the most common trigger of acute hives — far more common than allergies. This surprises many parents.
Infections
- Viral infections — colds, flu, stomach bugs, and other common childhood illnesses can trigger hives
- Bacterial infections — ear infections, urinary tract infections, and strep throat
- Hives can appear at the start of, during, or after an infection
Allergies
- Foods — eggs, milk, nuts, fish, shellfish, wheat, and soy are the most common triggers
- Medications — antibiotics (especially penicillin) and anti-inflammatory drugs
- Insect stings — wasp and bee stings can cause local or widespread hives
- Contact allergy — less common in children, but can occur with latex or certain plants
Other Causes
- Cold or heat — sudden temperature changes can trigger hives in some children
- Physical activity — sweating during play can cause small, dense welts (cholinergic urticaria)
- Pressure on the skin — tight clothing, backpack straps, or being carried can cause welts
- Unknown cause — in many cases, the exact trigger is never found
Tip: Keep a simple diary noting what your child has eaten, been exposed to, and any medications taken. This can help a doctor identify patterns if the hives return.
Treatment of Hives in Children
Most cases of hives in children are mild and go away on their own. Treatment is about relieving the itch and making your child more comfortable.
Medications
- Antihistamines are the first choice for hives. Cetirizine (Zyrtec) and loratadine (Claritin) are available without a prescription and come in child-friendly formulations (syrup/drops)
- Follow the age-appropriate dosage on the packaging or ask your pharmacist
- Antihistamines can be given preventively for a few days if the child has recurring outbreaks
- Older antihistamines can cause drowsiness and are sometimes used at night for severe itching
Home Relief
- Cool compresses — a cool, damp cloth over the itchy areas can provide quick relief
- Lukewarm shower or bath — avoid hot water, which can worsen itching
- Loose clothing — choose soft, roomy cotton clothing
- Avoid scratching — keep your child's nails short. Babies can wear cotton mittens
- Moisturizers — fragrance-free creams can soothe the skin, but don't apply them directly to active welts
Important about cortisone: Cortisone creams have limited effect on hives and are generally not recommended. Use antihistamines as the first choice.
If the Cause Is Known
If you know what triggers hives in your child, the most important step is to avoid the trigger. For food allergies, the child should be evaluated by a doctor and possibly followed up by a registered dietitian.
Hives and Angioedema
Some children with hives also develop angioedema — a deeper swelling in the skin, often around the eyes, lips, hands, or feet. Angioedema is uncomfortable but usually harmless. It is treated the same way as hives.
Angioedema in the throat or tongue, however, is an acute situation that requires immediate medical attention. See the section on when to contact a doctor.
When Should You See a Doctor?
Call your pediatrician or seek urgent care if your child:
- Has hives lasting more than a few days without improvement
- Has recurring episodes of hives
- Does not respond to antihistamines
- Shows clear signs of an allergic reaction (see below)
- Is under 6 months with widespread hives
- Has a fever and appears generally unwell
Call emergency services immediately if your child shows signs of anaphylaxis:
- Swelling of lips, tongue, or throat
- Difficulty breathing or wheezing
- Dizziness or fainting
- Rapid worsening of general condition
Anaphylaxis is rare, but it is an acute, life-threatening allergic reaction that requires immediate treatment.
Preventing Hives
It is not always possible to prevent hives, but some measures can reduce the risk:
- Identify triggers — if your child has had repeated episodes, allergy testing can help
- Introduce new foods gradually — when starting solids, introduce one new allergen at a time and observe for a few days
- Avoid known triggers — if an allergy is confirmed, avoidance is the most important measure
- Inform daycare and school — make sure staff are aware of your child's allergies and have an action plan
- Keep antihistamines available — store age-appropriate antihistamines at home and in the daycare bag
Track Your Child's Health
Want to keep track of your child's health experiences? Use our tools to log allergy reactions, illness periods, and medications. Have questions about your child's symptoms? Chat with our AI assistant for guidance tailored to your situation.
Frequently Asked Questions
Are hives dangerous for children?
No, hives are usually completely harmless and go away on their own. The only situation that requires emergency help is if the child develops signs of anaphylaxis with breathing difficulties or swelling in the throat. This is extremely rare.
How long do hives last in children?
Acute hives typically last from a few hours to a few days. Each individual welt usually disappears within 24 hours, but new ones can appear for a period. Most cases in children resolve within a week.
Can babies get hives?
Yes, infants can also get hives. In babies, viral infections are the most common cause. If your baby is under 6 months and develops widespread hives, you should contact a doctor for evaluation.
Should my child be tested for allergies after hives?
Not necessarily. For single episodes that resolve quickly, further investigation is rarely needed. If your child has repeated episodes, a clear connection to specific food, or other allergic symptoms, you should discuss this with your doctor.