autism

noun4

1. •
   Autism spectrum disorder, a condition characterized by impairment in social communication and interaction, as well as a need or strong preference for predictability and routine, sensory processing differences, focused interests, or repetitive behaviours. This includes classic autism as well as other, previously distinct disorders such as Asperger's syndrome, childhood disintegrative disorder, and pervasive developmental disorder not otherwise specified.
2. •
   (old-fashioned) Classic autism, a pervasive neurological condition that is observable in early childhood and persists throughout the lifespan, characterised by atypical communication patterns (e.g., differences in body language or eye contact), delayed language development, and sensory processing sensitivities.
3. •
   (Internet, offensive) Abnormal and unhealthy focus or persistence, stereotypically coupled with low self-awareness and unhealthy hatred of opposition or criticism.
4. •
   (no longer used) A diagnosis involving a pathological tendency to engage in self-centered fantasy thinking, historically considered a symptom of insanity or schizophrenia.