CHAPTER 25: Children: Infancy through Adolescence The parents of a 21-month-old child explain that their son used to speak nearly 50 words and was using 2-word phrases. In the last month or so, the child has not been using as many words and tends to echo what is being said to him rather than use language spontaneously. They want to know if this is normal. After taking a thorough developmental history, the clinician finds that the child makes poor eye contact and does not play with toys in a purposeful manner. The physical examination is normal except for the child's limited social interactions. There is a family history of autism in two first cousins. Which of the following would be the best response to the parents at this time? {Ans: d. Refer the child to a developmental and behavioral pediatrician. Rationale: Any loss of milestones of this duration and severity requires that the examiner take a thorough medical, developmental, family, and social history. Referral to either a developmental and behavioral pediatrician and/or child neurologist for diagnostic clarification is important. The child may also be referred to early intervention for services to address the delays. This child is likely to