Pediatrics: Development, Differential Diagnosis, and Family-Centered Care
Core concepts
Pediatric practice questions test developmental milestones, age-appropriate differential diagnosis, and communication with caregivers. Know the sequence of gross motor, fine motor, language, and social milestones well enough to flag delay. Understand common pediatric presentations-fever without source, vomiting, abdominal pain, limp, and rash-and how differentials shift by age. Recognize red flags for serious bacterial infection and for non-accidental trauma (injury pattern inconsistent with development). Appreciate family-centered care: shared decision-making, caregiver education, and recognizing caregiver stress.
Common traps
Exam questions often exploit developmental staging-e.g., what a 2-month-old can or cannot do-or present a benign finding that mimics serious disease (e.g., physiologic reflux vs. bilious vomiting). Bilious vomiting in a neonate is a surgical emergency until proven otherwise. Another trap is dismissing parental concern; a caregiver's report of change in behavior is clinically meaningful. Also be alert to age-specific normal variants (e.g., physiologic bowing, benign murmurs) so you do not over-test.
Worked example
A 3-week-old with 2 episodes of bilious emesis and mild lethargy. This suggests malrotation with midgut volvulus. Immediate priority: nothing by mouth, IV fluids, and urgent surgical consultation with imaging as directed-do not send home with a diagnosis of reflux. Rule of thumb: bilious vomiting in a neonate is a surgical emergency; non-bilious spit-up in a thriving infant is usually physiologic.
Exam strategy
Anchor on age and development, then build a differential. Treat caregiver report as data. Identify red flags that mandate escalation.