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Incomplete Kawasaki disease: The usefulness of BCG reactivation as a diagnostic tool
Omer S M Suliman1, Mohamed Abdelnasser1
1Department of Paediatrics , AlRass General Hospital , Saudi Arabia.
Insights
BCG reactivation can aid in the early diagnosis of incomplete Kawasaki disease (IKD) in infants under 3 months. This rare condition
Area of Science:
- Pediatrics
- Immunology
- Infectious Diseases
Background:
- Kawasaki disease (KD) is rare in infants under 3 months, but cardiovascular complications are more prevalent in this age group.
- Incomplete Kawasaki disease (IKD) presents a diagnostic challenge, particularly in young infants.
- Early diagnosis is crucial to prevent severe cardiovascular sequelae.
Observation:
- BCG vaccination is part of the routine immunization schedule in many countries.
- BCG reactivation, an inflammatory response at the BCG vaccination site, has been observed.
- This case report details an infant under 3 months diagnosed with IKD.
Findings:
- BCG reactivation served as a key indicator for diagnosing IKD in an infant younger than 3 months.
- The presence of BCG reactivation facilitated earlier identification of IKD in this specific case.
- This sign proved particularly useful in the context of incomplete presentations of Kawasaki disease.
Implications:
- BCG reactivation may be a valuable clinical sign for the early diagnosis of IKD in infants.
- Highlighting this sign can improve diagnostic accuracy, especially in regions with high BCG vaccination rates.
- Early IKD diagnosis through such indicators can lead to timely treatment and potentially reduce cardiovascular complications.
Abstract:
Kawasaki disease (KD) is an extremely rare condition in infants younger than 3 months old. Cardiovascular complications are unfortunately most common in young infants and it is in this age group, incomplete Kawasaki disease (IKD) is more frequently reported. Because IKD is a diagnostic dilemma, any sign that could help early diagnosis, such as BCG reactivation is useful. Here we report on an infant less than 3 months old with IKD wherein, BCG reactivation helped us in making the diagnosis. In this article, we highlight the usefulness of this sign for early diagnosis of IKD, especially in countries where BCG vaccination is still part of the immunization schedule.
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