Tim, a 7-year-old child with an individual IQ score estimate…

Tim, a 7-year-old child with an individual IQ score estimated at 55 and a diagnosis of moderate Intellectual Developmental Disability. He has a flattened nose and somewhat larger than average tongue. His hands are short and broad with only one crease across the palm. His eyes slant upward. His head seems small for his body and slightly flattened on the back. At birth, he had a bowel defect that was corrected early in development.  Tim’s mother states, “Timmy was a real surprise to his dad and me. I was 46 and thought my symptoms were the beginning of menopause. I was really surprised when the doctor told me I was pregnant. But he is a sweet child even if he has problems. His brothers who are much older love him and protect him.” Tim likely has what condition?