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Conditions We Treat

Urticaria Belfast

Urticaria (hives) affects around 15–20% of people at some point in their lives. In children, identifying the trigger and providing effective treatment can prevent recurrence and significantly improve quality of life.

Specialist urticaria assessment for children at Belfast Allergy Clinic

Overview

Urticaria (commonly known as hives or nettle rash) is characterised by itchy, raised, red or skin-coloured wheals (welts) that appear suddenly on the skin. Each individual wheal typically resolves within 24 hours, but new ones may continue to appear. Urticaria is classified as acute (lasting less than 6 weeks) or chronic (lasting more than 6 weeks). Acute urticaria in children is most commonly triggered by viral infections, foods or medications. Chronic urticaria is less commonly allergic in origin — in most cases, no specific trigger is identified (chronic spontaneous urticaria). Angioedema — deeper swelling of the skin, lips, tongue or throat — frequently accompanies urticaria and requires urgent assessment when it affects the airway.

Expert paediatric assessment in Belfast — Dr Mugilan Anandarajan (FRCPCH) provides thorough, evidence-based evaluation and management for children aged 0–16. No GP referral required.

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Common Symptoms

  • Raised, itchy wheals (welts) — red, pink or skin-coloured, varying in size from a few millimetres to several centimetres
  • Wheals that appear suddenly and resolve within 24 hours, but may recur
  • Intense itching — often worse in the evening and at night
  • Swelling of the lips, eyelids, hands, feet or genitalia (angioedema)
  • Swelling of the tongue or throat — requires urgent medical attention
  • Burning or stinging sensation in the skin
  • In physical urticaria: wheals triggered by pressure, cold, heat, exercise or sunlight
  • Associated symptoms in allergic urticaria: vomiting, wheeze, dizziness (suggesting anaphylaxis)

Causes & Triggers

  • Viral infections — the most common trigger of acute urticaria in children
  • Food allergens — cow's milk, egg, peanut, tree nuts, fish, shellfish, wheat
  • Medications — antibiotics (particularly penicillin), NSAIDs (ibuprofen, aspirin)
  • Insect stings — bee and wasp venom
  • Contact allergens — latex, plants, animal saliva
  • Physical triggers — pressure (dermographism), cold, heat, exercise, sunlight (physical urticarias)
  • Autoimmune mechanisms — in chronic spontaneous urticaria, autoantibodies activate mast cells
  • Thyroid disease — associated with chronic urticaria in some cases
  • Rarely: underlying systemic disease (vasculitis, autoinflammatory conditions)

Diagnosis & Testing

Dr Anandarajan takes a detailed history covering the onset, duration, pattern and distribution of wheals, associated angioedema, potential triggers (foods, medications, infections, physical factors), and any family history of urticaria or atopic conditions. For acute urticaria with a suspected food or drug trigger, skin prick testing and specific IgE blood tests are performed. For chronic urticaria, a targeted investigation panel is recommended — including full blood count, inflammatory markers, thyroid function and thyroid autoantibodies. Allergy testing is not routinely indicated for chronic spontaneous urticaria as allergy is rarely the cause. A detailed diary of symptoms, potential triggers and response to treatment is a valuable diagnostic tool.

  • Skin prick testing (SPT) — for suspected food or contact allergen triggers in acute urticaria
  • Specific IgE blood tests — for suspected food or drug allergens
  • Full blood count and inflammatory markers — to exclude infection or systemic disease
  • Thyroid function tests and thyroid autoantibodies — associated with chronic urticaria
  • Autologous serum skin test (ASST) — to identify autoimmune chronic urticaria
  • Physical challenge testing — ice cube test (cold urticaria), dermographometer (symptomatic dermographism)
  • Symptom diary — to identify patterns, triggers and response to treatment
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Management & Treatment

Management of urticaria depends on the type and severity. For acute allergic urticaria, identifying and avoiding the trigger is the priority. Non-sedating antihistamines (cetirizine, loratadine, fexofenadine) are the first-line treatment for both acute and chronic urticaria — at standard or up to four times the standard dose for chronic urticaria. For chronic spontaneous urticaria not controlled by antihistamines, omalizumab (a biologic anti-IgE antibody) is highly effective and licensed for children aged 12 and above. Children with urticaria associated with angioedema of the tongue or throat, or with systemic symptoms, are prescribed an adrenaline auto-injector. Dr Anandarajan provides a clear written management plan and advises on trigger avoidance, antihistamine use and when to seek emergency treatment.

  • Non-sedating antihistamines (cetirizine, loratadine, fexofenadine) — first-line for all urticaria
  • High-dose antihistamine therapy (up to 4x standard dose) for chronic urticaria
  • Short course of oral corticosteroids for severe acute urticaria flares
  • Adrenaline auto-injector (EpiPen / Jext) for urticaria with angioedema or anaphylaxis risk
  • Trigger identification and avoidance — food, medication, physical triggers
  • Personalised written management plan including when to seek emergency treatment
  • Dietary review — low-pseudoallergen diet in selected cases of chronic urticaria

When to Seek a Specialist Opinion

Your child has had urticaria with swelling of the lips, tongue or throat
Urticaria is recurring frequently and significantly affecting quality of life
Over-the-counter antihistamines are not providing adequate relief
You suspect a food or medication is triggering your child's urticaria
Your child has had urticaria alongside breathing difficulties or dizziness (anaphylaxis)
Urticaria has been present for more than 6 weeks (chronic urticaria)
You want to identify the cause of your child's urticaria
Your child has urticaria alongside eczema or other allergic conditions
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Common Questions

Frequently Asked Questions

Questions parents commonly ask about urticaria in children — answered by Dr Mugilan Anandarajan, Consultant Paediatrician, Belfast.

Urticaria (hives) involves superficial wheals in the upper layers of the skin — itchy, raised, red or skin-coloured welts that resolve within 24 hours. Angioedema is deeper swelling in the lower layers of the skin and subcutaneous tissue, most commonly affecting the lips, eyelids, hands, feet and genitalia. It is less itchy than urticaria but may cause a burning or tight sensation. Angioedema of the tongue or throat is a medical emergency requiring immediate treatment with adrenaline.
In acute urticaria (lasting less than 6 weeks), food allergy is a possible trigger — particularly in young children. Common food triggers include cow's milk, egg, peanut, tree nuts, fish and shellfish. However, in chronic urticaria (lasting more than 6 weeks), food allergy is rarely the cause — most cases are due to autoimmune mechanisms or remain unexplained (chronic spontaneous urticaria). Dr Anandarajan will assess whether allergy testing is appropriate based on your child's history.
Chronic spontaneous urticaria (CSU) is urticaria that occurs spontaneously (without an obvious trigger) on most days for more than 6 weeks. In around 40–50% of cases, it is caused by autoantibodies that activate mast cells in the skin. In most cases, no specific external trigger is identified. CSU can last months to years but typically resolves over time. It is not caused by food allergy in the vast majority of cases. Treatment with high-dose antihistamines is highly effective.
Dermographism (also called dermatographia or 'skin writing') is a form of physical urticaria where firm stroking or scratching of the skin causes a linear wheal to appear within minutes. It is the most common form of physical urticaria and affects around 5% of the population. It can cause significant itching and is treated with non-sedating antihistamines.
No. You can book directly at Kingsbridge Private Hospital or Ulster Independent Clinic without a GP referral. Dr Anandarajan sees children aged 0–16 with acute and chronic urticaria.
Dr Anandarajan is recognised by all major UK private health insurers including Bupa, AXA Health, Aviva, Vitality, WPA and Benenden Health. Self-pay patients are also very welcome.
Seek emergency treatment (call 999) immediately if your child develops swelling of the tongue or throat, difficulty breathing or swallowing, a hoarse voice, dizziness or collapse alongside urticaria — these are signs of anaphylaxis. Use a prescribed adrenaline auto-injector (EpiPen or Jext) immediately if available. Urticaria alone (without these features) is not an emergency, but should be reviewed by a specialist if it is recurrent, widespread or not responding to antihistamines.

Have a question not answered here? Contact the clinic or call 028 9066 2878.

Areas We Serve

Urticaria Treatment for Families Across Northern Ireland

Families travel from across Northern Ireland to see Dr Anandarajan at Kingsbridge Private Hospital, Belfast. Easily accessible from the M1, M2 and A1 with free on-site parking. No GP referral required.

BelfastLisburnBangorNewtownardsHolywoodCarrickfergusAntrimCraigavonNewryArmaghBallymenaLondonderry / DerryOmaghEnniskillenDownpatrickNewtownabbeyNorth DownArds PeninsulaCounty DownCounty AntrimCounty ArmaghNorthern Ireland

Get expert help for Urticaria in Belfast

Dr Mugilan Anandarajan (FRCPCH) provides specialist paediatric allergy assessment at Kingsbridge Private Hospital and Ulster Independent Clinic. No GP referral required. Most major health insurers accepted.

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Kingsbridge Private Hospital, 811–815 Lisburn Road, Belfast BT9 7GX

Why parents choose Belfast Allergy Clinic

  • Consultant Paediatrician (FRCPCH)
  • 25+ years clinical experience
  • Children aged 0–16 years
  • No GP referral required
  • Allergy testing available
  • Face-to-face and video consultations
  • Recognised by major insurers
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