Hives in Children: Causes, Treatment, and When to Seek Help

Hives, also known as urticaria, are a common skin condition in children, affecting many at some point in their lives. While often harmless and resolving on their own, understanding the causes, recognizing when to treat at home, and knowing when to seek immediate medical attention is crucial for parents, and caregivers.

What Do Hives Look Like in Children?

Hives in children appear similarly to those in adults: as red, raised blotches or welts on the skin. These can appear singly, in connected patches, or in groups. Typically, individual hives disappear within 24 hours, though new ones may continue to emerge.¹

What Causes Hives in Children?

Hives occur in response to a trigger or allergen. Common causes include:

• Foods: Milk, egg, peanut, wheat, and soy are frequent allergens.^1,4 Food allergies are a more common trigger in children than in adults.¹
• Medications: Antibiotics are a common culprit.¹
• Infections: Strep throat and common childhood viruses (like the common cold) can cause hives.¹
• Environmental Factors: Pet dander, fragrances, soaps, lotions, insect bites, extreme temperature changes, exercise, and stress can all trigger hives.¹

When to Treat Hives at Home

If hives aren’t accompanied by serious symptoms, they can often be managed at home. The primary goal is to relieve itching and discomfort. Here are some strategies:

• Over-the-Counter Antihistamines: Medications like diphenhydramine (Benadryl) or cetirizine and pseudoephedrine (Zyrtec-D) can help block histamine release, reducing itchiness. Always follow dosage instructions based on the child’s weight and age.¹
• Avoid Scratching: Scratching can break the skin and increase the risk of infection. Dress the child in clothes that cover the hives to minimize scratching.¹
• Cool Compresses: Applying a cool washcloth or cold pack to the hives can provide relief, unless the hives are triggered by cold temperatures.¹
• Oatmeal Baths: Lukewarm baths with colloidal oatmeal can soothe itchy skin. Limit bath time to the recommended duration on the product packaging.^1,2
• Gentle Skincare: Avoid bubble baths and scented lotions. After bathing, moisturize the skin with a gentle cream or lotion.¹

Keep a detailed record of when the hives appeared, the child’s activities, and recent food intake to help identify potential triggers.¹

When Are Hives an Emergency?

In some cases, hives can indicate a severe allergic reaction called anaphylaxis, which requires immediate medical attention. Seek emergency care if your child experiences any of the following symptoms:

• Difficulty breathing
• Dizziness or fainting
• Nausea and vomiting
• Abdominal pain
• Diarrhea
• Rapid heartbeat
• Throat tightness
• Hoarse voice

A condition called angioedema, causing swelling of the eyes, lips, hands, feet, and genitals, can also cause breathing issues and requires immediate medical attention.¹ An epinephrine injection is typically administered in a hospital setting, and a pediatric allergist may be consulted.¹

When to See a Pediatrician

If your child continues to experience hives, or if a single hive lasts longer than 24 hours, schedule an appointment with their pediatrician.¹ The pediatrician will assess the situation, review any medications tried, and determine if allergy testing is necessary.¹ Treatment may include antihistamines, oral steroids like prednisone, or addressing an underlying illness.¹

While hives can be alarming, most cases aren’t dangerous and resolve on their own. Understanding the causes and knowing when to seek medical attention can help ensure your child receives the appropriate care.