A 2-year-old child is brought to the pediatrician due to con…
A 2-year-old child is brought to the pediatrician due to concerns about delayed walking and stiff movements. The parents report that the child has difficulty with balance and coordination, and walks on their toes with legs appearing stiff and scissored. Physical examination reveals increased muscle tone and hyperreflexia in the lower extremities. Which of the following best describes the characteristics of this child’s likely condition?