“Pervasive Communication Disorder” is not a formally recognized medical term, but it essentially refers to significant difficulties in communication across various aspects of social interaction, often associated with Autism Spectrum Disorder (ASD), where individuals struggle with understanding and expressing themselves both verbally and non-verbally, including challenges with social cues, maintaining conversation, and interpreting body language; essentially encompassing the communication difficulties seen in conditions like Pervasive Developmental Disorder (PDD).