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Pervasive Developmental Disorders

What are Pervasive Developmental Disorders (PDD)?

Pervasive Developmental Disorder (PDD) is the term used to refer to a group of disorders that are characterised by developmental delays in social and communication skills.
There are five types of Pervasive Developmental Disorders:

Pervasive developmental Disorder usually occurs before three years of age, however, the cause is not yet known. Pervasive Development Disorders are lifelong conditions, but individuals who have one will vary greatly in their abilities, behaviour and intelligence. There are a wide range of symptoms which can be experienced as part of PDD, these will vary for each individual and can range from mild to severe difficulties.

Common symptoms experienced byindividuals with Pervasive Developmental Disorders include:

  • Problems with verbal communication, including expressive and receptive language
  • Problems with non-verbal communication, including body language, facial expressions and gestures
  • Difficulty during social interaction, including interacting with other people and also the environment
  • Difficulty adapting to any changes in routines or surroundings
  • Repetitive body movements
  • Unusual response to sensory information e.g. noises and lights
  • Mood swings including temper tantrums
  • Difficulty with sleeping patterns
  • Aggression and Anxiety

To arrange an assessment with one of our therapists please contact us by emailing office@asdtherapy.co.uk or calling 0330 088 6693.





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You can also get in touch by calling us on 0330 088 6693, or you can email us on office@asdclinic.co.uk




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