Health Resources

Urticaria - Hives (Children)

2026/01/28
What Is Urticaria

Urticaria, commonly known as hives, manifests as itchy rashes characterised by redness and skin swelling, often resembling mosquito bites of varying sizes. 

UrticariaUrticaria
Examples of urticaria (hives)

When hives occur around loose tissue, such as the eyes or lips, leading to swelling in these areas, the condition is known as angioedema. Angioedema - LipAngioedema - Eye

Examples of angioedema

 

Urticaria can be categorised into acute and chronic.  

  • Acute urticaria: The most common form in children, lasts less than six weeks, with fluctuations in size and location of the rashes.  
  • Chronic urticaria: Persists for over six weeks and is seen in both children and adults. 

Urticaria is a common condition that affects up to 20% of people at some point in their lives1.  Chronic urticaria is most commonly caused by the immune system, usually resolving over time. However, it may take 6 months or longer for the condition to be resolved.

Source: 1American Family Physician

Causes of Urticaria

Acute urticaria is most commonly triggered by an infection, either viral or bacterial. It can also arise from food or drug allergies. Physical factors, such as cold, pressure, sweat, or sunlight, are rare causes. 

Diagnosis And Treatment Options For Urticaria

Typically, tests are not required, but some children may require skin or blood tests if a trigger or underlying illness is suspected. As the appearance of urticaria may be similar despite all underlying causes, a thorough history of the timeline and pattern of exposure is most informative in guiding test selection, especially in cases of chronic urticaria.  

Antihistamines are the preferred treatment for alleviating itchiness. Non-sedating antihistamines are first-line medications, reducing the number and frequency of urticarial flare-ups. Sedating antihistamines are helpful at bedtime as they may cause drowsiness; they are often combined with a non-sedating type during the day. Steroids like prednisolone are generally not recommended. 

Consult a doctor for an accurate diagnosis before starting any medication.

Tips For Taking Care Of Children With Urticaria

Seek immediate medical attention for your child if: 

  • The hives are painful, last more than 48 hours or do not fade. 
  • The urticaria is accompanied by throat swelling or breathing difficulties. 
  • There is loss of consciousness. 
  • You suspect a specific trigger and wish to confirm it through tests. 
  • If it is recurrent, often occurring over a few months. 
  • If it is chronic, lasting for more than 6 weeks. 
About Us
The Department of Paediatrics, Khoo Teck Puat – National University Children’s Medical Institute (KTP-NUCMI) is part of the National University Centre for Women and Children (NUWoC)

Our paediatricians provide comprehensive and specialised medical and surgical services for newborns, children and adolescents. 

Click here for information on how to make an appointment with our paediatricians. 
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