Anxiety disorders and rheumatic Fever: is there an association?
BACKGROUND
Findings suggest that obsessive-compulsive disorder (OCD) and related disorders, referred to as obsessive-compulsive spectrum disorders (OCSDs), are more common in patients with rheumatic fever (RF).


OBJECTIVE
To determine whether RF or Sydenham's chorea increases the probability of anxiety disorders in the relatives of individuals with RF with and without SC.


METHODS
This was a case-control family study in which 98 probands and 389 first-degree relatives (FDRs) were assessed using structured psychiatric interviews. A Poisson regression model was used to determine whether the presence of any disorder in one family member influences the rate of disorders in the remaining family members.


RESULTS
Generalized anxiety disorder (GAD) occurred more frequently in the FDRs of RF probands than in those of control probands (P=.018). The presence of RF, GAD, or separation anxiety disorder in one family member significantly increased the chance of OCSDs in another member of the family.


CONCLUSIONS
We found familial aggregation among RF, GAD, and OCSDs. Clinicians should be aware of the possible familial relationship between GAD and OCSDs in their RF patients and their family members, which may suggest a genetic component between them. Further studies on OCD should include anxiety disorders to better define OCD spectrum.
Seixas
A Augusto Anderson
AA
Department of Psychiatry, University of São Paulo Medical School, Brazil. anah@protoc.com.br
Hounie
Ana G
AG
Fossaluza
Victor
V
Curi
Mariana
M
Alvarenga
Pedro G
PG
De Mathis
Maria A
MA
De Mathis
Maria E
ME
Vallada
Homero
H
Pauls
David
D
de Bragança Pereira
Carlos Alberto
CA
Miguel
Eurípedes C
EC
D000293:Adolescent; D001008:Anxiety Disorders / Q000175:diagnosis / Q000453:epidemiology*; D001938:Brazil / Q000453:epidemiology; D016022:Case-Control Studies; D002648:Child; D015897:Comorbidity; D005190:Family; D005260:Female; D006801:Humans; D008297:Male; D009771:Obsessive-Compulsive Disorder / Q000175:diagnosis / Q000453:epidemiology*; D015995:Prevalence; D011569:Psychiatric Status Rating Scales / Q000706:statistics & numerical data; D012044:Regression Analysis; D012213:Rheumatic Fever / Q000175:diagnosis / Q000453:epidemiology*