Pervasive Developmental Disorders (PDDs) include autism and a range of other neurological disorders. While at least 250,000 Americans have been diagnosed with PDD-NOS - one-third of whom are children - twice as many may remain undiagnosed or misdiagnosed. Parents of a young child with undiagnosed PDD may suspect any number of things, from autism to severe allergies. This book is for parents (or newly diagnosed adults) who struggle with this neurological condition. Medications, therapies, and educational techniques can address symptoms and improve the lives of people with PDD. In some cases, the results can be spectacular.