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Antibiotic prophylaxis with azithromycin or penicillin for childhood-onset neuropsychiatric disorders

Lisa A Snider1, Lorraine Lougee, Marcia Slattery

  • 1Pediatrics and Developmental Neuropsychiatry Branch, National Institute of Mental Health, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland 20892, USA. sniderl@intra.nimh.nih.gov

Biological Psychiatry
|April 12, 2005
PubMed

Insights

Preventing streptococcal infections with penicillin or azithromycin significantly reduced symptom exacerbations in children with pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections (PANDAS). This antibiotic prophylaxis is effective for PANDAS symptom management.

Area of Science:

  • Pediatric Neurology
  • Infectious Diseases
  • Psychiatry

Background:

  • Pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections (PANDAS) involves children with OCD/tic disorders experiencing symptom flares after strep infections.
  • PANDAS is characterized by autoimmune responses triggered by streptococcal infections, leading to neuropsychiatric symptoms.
  • Understanding the link between streptococcal infections and PANDAS is crucial for developing effective treatment strategies.

Purpose of the Study:

  • To investigate the efficacy of antibiotic prophylaxis in preventing streptococcal infections and subsequent neuropsychiatric symptom exacerbations in children with PANDAS.
  • To test the hypothesis that reducing streptococcal infections would decrease symptom flares in the PANDAS subgroup.

Main Methods:

  • A double-blind, randomized controlled trial involving 23 children diagnosed with PANDAS.
  • Participants received 12 months of antibiotic prophylaxis (penicillin or azithromycin).
  • Rates of streptococcal infections and neuropsychiatric symptom exacerbations were compared between the 12-month study period and the preceding baseline year.

Main Results:

  • Antibiotic prophylaxis significantly decreased streptococcal infections per subject (mean 0.1-0.8) compared to the baseline year (mean 1.8-2.4) (p<.01).
  • A significant reduction in neuropsychiatric symptom exacerbations was observed during the study year (mean 0.5-0.8) versus the baseline year (mean 1.8-2.0) (p<.01).
  • Both penicillin and azithromycin demonstrated effectiveness in reducing infections and exacerbations.

Conclusions:

  • Antibiotic prophylaxis with penicillin or azithromycin is effective in reducing streptococcal infections in children with PANDAS.
  • Prophylactic antibiotics significantly decrease neuropsychiatric symptom exacerbations in the PANDAS subgroup.
  • This study supports the use of antibiotic prophylaxis as a strategy for managing PANDAS.
Abstract

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