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Pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections (PANDAS)

Molecular Psychiatry volume 7, pages S24–S25 (2002)Cite this article

Parallels between Sydenham chorea (SC), the neurologic manifestation of rheumatic fever, and childhood-onset OCD suggest that the two disorders may have a shared etiopathogeneis.1 The disorders have similar regional localization—both OCD and SC have evidence of basal ganglia dysfunction, particularly in the caudate nucleus, which is thought to disrupt signals traveling along the orbitofrontal-striatal pathways. Further, over 70% of children with SC report that they have experienced an abrupt onset of repetitive, unwanted thoughts and behaviors 2–4 weeks prior to the onset of their chorea.2 The obsessions and compulsions peak in intensity concomitantly with the chorea and wane away slowly over the ensuing months. A subgroup of patients with childhood-onset OCD was noted to have a similar symptom course. The OCD exacerbations occurred following GAS infections, accompanied by a cluster of comorbid symptoms, including emotional lability, separation anxiety, and attentional difficulties. The children were young (6–7 years old at symptom onset), predominantly male, and often had comorbid tics.3 To indicate their shared clinical features (and presumed etiopathogenesis), the subgroup was identified by the acronym PANDAS—Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcal infections.3

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  1. Pediatrics and Developmental Neuropsychiatry Branch, National Institute of Mental Health, Bethesda, MD, USA

    S E Swedo

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Swedo, S. Pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections (PANDAS). Mol Psychiatry 7 (Suppl 2), S24–S25 (2002). https://doi.org/10.1038/sj.mp.4001170

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