Obsessive-compulsive symptoms in sibling pairs concordant for obsessive-compulsive disorder.

@article{Chacon2007ObsessivecompulsiveSI,
  title={Obsessive-compulsive symptoms in sibling pairs concordant for obsessive-compulsive disorder.},
  author={Priscila de J Chacon and Maria Conceiç{\~a}o do Ros{\'a}rio-Campos and David L. Pauls and Ana Gabriela Hounie and Mariana C{\'u}ri and Fernando Akkerman and Fabiana Harumi Shimabokuro and Maria Alice de Mathis and Ant{\^o}nio C. V. Lopes and Gregor Hasler and Euripedes Constantino Miguel},
  journal={American journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics},
  year={2007},
  volume={144B 4},
  pages={551-5}
}
Obsessive-compulsive disorder (OCD) is a heterogeneous disorder of unknown etiology. Phenotypic studies of affected sib-pairs (SPs) may help to characterize familial components of the phenotype. To determine whether SPs affected with OCD are similar in age at onset of obsessive-compulsive symptoms (OCS), symptom dimensions and presence of tic disorders (TDs… CONTINUE READING