Normocomplementaemic Urticarial Vasculitis in a 19-Month-Old Girl

Area of Science:

• Pediatrics
• Dermatology
• Immunology

Background:

• Urticaria is a common pediatric skin condition.
• Urticarial vasculitis (UV) is a rare, more severe variant.
• UV typically affects adults, with limited pediatric case reports.

Purpose of the Study:

• To report a case of urticarial vasculitis in a young child.
• To discuss the diagnostic and prognostic challenges of pediatric UV.
• To contribute to the limited literature on UV in infants.

Main Methods:

• Clinical presentation of a 19-month-old girl with a widespread rash.
• Physical examination revealing urticarial and palpable purpuric lesions.
• Laboratory investigations including complete blood count, electrolytes, renal function, coagulation profile, urinalysis, and erythrocyte sedimentation rate.
• Complement studies (including C1q) performed later.

Main Results:

• The patient presented with a widespread urticarial rash overlaid with palpable purpura and hyperpigmentation.
• Initial laboratory tests were largely normal, with a mildly elevated erythrocyte sedimentation rate.
• Complement studies, including C1q, were within normal limits.
• The patient was systemically well despite the extensive rash.

Conclusions:

• Pediatric urticarial vasculitis is rare and can present diagnostic challenges.
• The clinical presentation may mimic common urticaria, necessitating thorough investigation.
• Further research is needed to understand the unique aspects of UV in children.