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  • Title: A naturalistic exploratory study of the impact of demographic, phenotypic and comorbid features in pediatric obsessive-compulsive disorder.
    Author: Masi G, Millepiedi S, Perugi G, Pfanner C, Berloffa S, Pari C, Mucci M, Akiskal HS.
    Journal: Psychopathology; 2010; 43(2):69-78. PubMed ID: 20068377.
    Abstract:
    BACKGROUND: Few studies have examined the impact of gender, age at onset, phenotype and comorbidity in pediatric obsessive-compulsive disorder (OCD) in children. In this naturalistic study we consider these characteristics of OCD in the framework of the 4 OCD phenotypes (contamination/cleaning, order/symmetry, obsessions/checking and hoarding) proposed by Leckman et al. SAMPLING AND METHODS: A consecutive series of 257 patients aged 13.6 +/- 2.8 years, diagnosed using a DSM-IV-based clinical interview (Schedule for Affective Disorders and Schizophrenia for School Age Children - Present and Lifetime Version), were included. RESULTS: Patients with OCD onset before 12 years of age presented a higher frequency of comorbid tic disorder and disruptive behavior disorders. The type of obsession varied with gender: order/symmetry was more frequent in males, contamination/cleaning in females. Order/symmetry had the highest comorbidity with tics, contamination/cleaning was the least severe according to the Clinical Global Impression Severity, and was associated with a high rate of comorbid anxiety and depression, similarly to sexual-religious obsessions. Hoarding was the severest according to the Clinical Global Impression Severity, and was associated with a high comorbidity with social phobia and bipolar disorder. Tic comorbidity was more prevalent in males, had an earlier onset, and a heavier comorbidity with attention deficit hyperactivity disorder and other disruptive behavior disorders. A comorbid attention deficit hyperactivity disorder was associated with an earlier onset of OCD and a poorer response to treatments. CONCLUSIONS: OCD phenotypes and comorbidities may have marked clinical and prognostic implications. Tertiary care population results may not generalize to less impaired juvenile populations.
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