Which of the following can lead to regression of developmental milestones

Which of the following can lead to
regression of developmental milestones
a) Rett’s syndrome
b) Autism
c) Neuromuscular diseases
d) All of the above
Correct Answer - D
Answer- D. All of the above
The hallmark of many degenerative disorders is neurological
regression.
Loss of only language skills – autism – suspected.
Regression of both language and motor milestones → Rett’s
syndrome.