According to the Center for Disease Control and Prevention, PDDs were estimated to occur in two to six per 1,000 births in 2003 with autism being the most common PDD, affecting an estimated one in 250 births.
The LCDC is a Massachusetts Chapter 766-approved day school, serving students with autism or PDD ages three to 14.
Autism, defined as a pervasive developmental disorder, or PDD, is a complex neurological disorder that affects brain development.
Pervasive developmental disorder-not otherwise specified, or PDD-NOS, is also referred to as atypical personality development, atypical autism, or atypical PDD.
The PDD category in the DSM IV is complex, making identification of certain conditions difficult.
