A 16-month-old boy has a normal weight for his age but a height far below the normal range. His list of symptoms includes a protruding abdomen, lethargy, bow legs, muscle weakness, and irritability. His teeth have not yet developed, and he has difficulty standing. What is the child's most likely diagnosis?
A) Rickets
B) Rachitic rosary
C) Paget disease
D) Developmental dysplasia of the hip

Question

Quizplus · Accepted Answer

All of these are symptoms of rickets that are noticed between 6 months and 3 years of age. The rachitic rosary refers to prominent rib cartilage, which is also a symptom of rickets. Paget disease is a progressive skeletal disorder characterized by increasing structural changes of the long bones, spine, pelvis, and cranium; it usually begins during mid-adulthood. DDH is developmental dysplasia of the hip.

A 16-Month-Old Boy Has a Normal Weight for His Age