Parents may observe symptoms of pervasive developmental disorders (PDD) as early as infancy, although the typical onset is before the age of 3. These symptoms can encompass various challenges related to language, social interaction, behavior, and sensory processing. Specific symptoms may include:
- Difficulties with using and understanding language.
- Challenges in relating to people, objects, and events.
- Unusual play with toys and objects.
- Resistance to changes in routine or familiar surroundings.
- Repetitive body movements or behavior patterns.
Autism, a developmental brain disorder characterized by impaired social interaction, communication skills, and restricted interests and activities, is the most well-known and extensively studied PDD. Other types of PDD include Asperger’s Syndrome, Childhood Disintegrative Disorder, and Rett Syndrome.
Children with PDD exhibit a wide range of abilities, intelligence levels, and behaviors. Some may not speak at all, while others may use limited phrases or engage in conversations. Repetitive play skills and challenges in social interaction are commonly observed. Additionally, unusual responses to sensory stimuli, such as loud noises or bright lights, are often present.