Megan J. Troischt, MD

My 18-month-old son has had a diaper rash, with no other symptoms, within a few days of eating a poached egg on 3 separate occasions.

Given the array of childhood disorders that can adversely affect the immune system, most pediatricians at some point will care for children who are immunodeficient.

A 13-year-old girl presented to her primary care pediatrician for continuing evaluation of intermittent right lower quadrant and right hip pain of 7 months' duration. As part of the workup, a pediatric orthopedist had ordered an MRI scan of her pelvis. The findings were normal except for the presence of multiple ovarian follicles bilaterally (Figures 1 and 2).