Many autistic children experience language regression for about three months in early childhood, but this lapse does not appear to foretell future communication issues.
Spectrum: Autism Research News
People with autism show significant improvements in cognitive ability from age 12 to 23 years, but their autism traits remain stable over this time.
Autistic children who lose words reach key milestones earlier than autistic children without language regression.
Some children who dramatically lose a range of abilities after age 2 may have a condition called childhood disintegrative disorder.
Watch the complete replay of Stelios Georgiades discussing a model for predicting trajectories in children with autism.