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Leprosy Reactions In Childhood: A Prospective Cohort Study In The Brazilian Amazon
Sabrina Sampaio Bandeira1,2, Carla Avelar Pires2,3, Juarez Antonio Simões Quaresma2,3
1Sanitary Dermatology Referral Unit "Dr. Marcello Cândia", Secretary of State for Public Health, Marituba, PA, Brazil.
Insights
Leprosy reactions are common in children in the Brazilian Amazon, with type I reactions being most frequent. Factors like older age and severe disease increase reaction risk, emphasizing the need for ongoing care after multidrug therapy (MDT).
Area of Science:
- Pediatrics
- Infectious Diseases
- Dermatology
Background:
- Leprosy reactions and severe multibacillary forms are frequent in children in highly endemic areas.
- Childhood leprosy reactions require thorough clinical and epidemiological description.
Purpose of the Study:
- To describe the clinical and epidemiological aspects of leprosy reactions in children from the Brazilian Amazon.
Main Methods:
- Prospective cohort study of 34 children (<15 years) diagnosed with leprosy.
- Follow-up during multidrug therapy (MDT) and one year post-treatment.
- Included neurologic examination and structured questionnaires.
Main Results:
- 52.9% of patients experienced leprosy reactions or neuritis.
- Type I reactions were most common (77.8%), with many patients having multiple episodes.
- Older age (8-14 years), multibacillary leprosy, and numerous skin lesions were associated with reactions.
Conclusions:
- Older age, complex diagnosis, severe disease, and numerous lesions are risk factors for leprosy reactions in children.
- Reactions occurring after MDT underscore the necessity of sustained healthcare for pediatric leprosy patients.
Background And Objective:
In highly endemic areas, severe multibacillary forms of leprosy and reactional episodes are not rare in children. The objective of the present study was to describe the clinical and epidemiological aspects of leprosy reactions in children from the Brazilian Amazon.
Methods:
This was a prospective cohort study of 34 leprosy patients aged under 15 years diagnosed at a health referral unit in northern Brazil between April 2014 and June 2015. Follow-up medical consultations were performed during multidrug therapy (MDT) and one year after the end of treatment. Participants underwent a simple neurologic examination and answered a structured questionnaire.
Results:
Of the 34 recruited patients, 18 (52.9%) had leprosy reactions and/or neuritis. Among these, 10 (55.6%) had reactions at diagnosis, 13 (72.2%) had reactions after MDT, and 14 (77.8%) had two or more reactional episodes. Type I reactions occurred in 14 (77.8%) cases. Complications, such as disabilities, necrotizing erythema nodosum, or Cushing's syndrome, occurred in six (33.3%) patients. The following variables showed significant associations (p ≤ 0.05) with leprosy reactions: age 8-14 years, number of doctors seen (≥3), multibacillary classification, number of skin lesions (≥10), or borderline and lepromatous clinical forms. The high frequency of type I reactions resulted in prolonged corticosteroid therapy, which may cause deficient bone maturation in childhood.
Conclusion:
Older age in children, consulting many physicians for diagnosis, severe clinical forms, and numerous skin lesions were positively associated with reaction development. Reactions after MDT highlight the need for continuity in healthcare of children with leprosy.
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