My son is 21 months old , he has just started to play with wheels of the toy vehicles .He maintain good eye contact and speak more than 50 words . is that normal?

A. This requires proper evaluation so to clear your doubts regarding this and to receive proper information you should consult your pediatrician/concerned doctor who will guide you in a proper way and will also suggest proper investigation if required after clinical examination and tak(tging detailed history. That will be a better approach to get a proper treatment regarding this.