Autism Home > Pervasive Developmental Disorder Info
Pervasive developmental disorders (PDDs) are characterized by a delay in a person's communication and social skills -- autism and Rett syndrome are good examples. A PDD typically appears before the age of three (and sometimes as early as infancy). Symptoms will vary, but may include things like:
- Difficulty with changes in routine or familiar surroundings
- Problems with using and understanding language
- Difficulty relating to people, objects, and events.
Although all the conditions that fall under the term of PDD have some of the same characteristics, they may differ in:
- When the symptoms start
- How fast they appear
- How severe the symptoms are.
(For more info on this topic, including treatment options, click Pervasive Developmental Disorder.)