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The 4-Year Course of Tic Disorders in Boys With Attention-Deficit/Hyperactivity Disorder
Archives of General Psychiatry
Despite long-standing clinical concerns, relatively little is known about the comorbidity between attention-deficit/hyperactivity disorder (ADHD) and tic disorders. Therefore, we examined tic disorders in an ongoing prospective follow-up study of male subjects with ADHD, a sample unselected for any comorbid disorder. Methods: One hundred twenty-eight male children and adolescents with ADHD and 110 male controls were comprehensively evaluated at baseline and 4 years later. We characterized ticdoi:10.1001/archpsyc.56.9.842 pmid:12884890 fatcat:t3wlekhgcvdqzg5plylvgqb5h4