Childhood disintegrative disorder, or sometimes called CDD, is an extremely rare condition that's seen in children. What typically happens is that children have normal developmental trajectories. Cognitive, physical, and language skills progress normally until the age about two years old. In some children we see between the ages of two and ten years old, their cognitive functionings and their developmental milestones start to decline rather significantly. What makes this disorder also quite unique is that children tend to have a regression of their bowel and bladder control as well. Children with CDD are typically under psychiatric and neurological care. Their prognostic outcome is not always as positive as the other pervasive developmental disorders. But, in general, these are the signs and symptoms of childhood disintegrative disorder.