Komal Bajaj, MD

A 20-month-old boy brought to the emergency department with swelling on the right side of the neck and fever (temperature, 39.3°C [102.7°F]) of 1 day’s duration. The parents reported that the child had had intermittent fevers and poor weight gain for the past 3 months but no vomiting, diarrhea, rash, drooling, or difficulty in swallowing.

A previously healthy 15-year-old girl presents with right-sided chest pain that began a few hours earlier during Spanish class. The pain is nonradiating; it is alleviated by leaning forward and exacerbated by sitting still. Shortly after its onset, the patient had taken acetaminophen, which provided temporary relief. However, when she returned home from school, the pain resumed. She denies fever, shortness of breath, nausea, vomiting, and cough.

The 2-year-old boy shown here had been bitten on the left cheek by a medium-sized dog while at the home of his day-care provider. Immediately after the incident, the child was examined by his pediatrician and given a presciption for amoxicillin clavulanate. The next day, he presented to the emergency department with worsening cellulitis of the left cheek.