Children at Risk
OCD affects as many as 3% of the general population, roughly one million of whom are children and adolescents. These statistics translate into three to five youngsters with OCD per average-sized elementary school and as many as twenty in a large urban high school.
The age of onset in more than 50% of adult cases with this disorder is before age 15; 2% of children usually diagnosed between the ages of 7 and 12. OCD has been reported as early as the preschool years, with a peak onset age of about ten.
Unlike the high female: male ratio in other anxiety disorders, the ratio of boys to girls is 2:1.
Twenty percent of youngsters with OCD have another family member with OCD.