Editor’s Note:
The Case Challenge series includes difficult-to-diagnose conditions, some of which are not frequently encountered by most clinicians, but are nonetheless important to accurately recognize. Test your diagnostic and treatment skills using the following patient scenario and corresponding questions. If you have a case that you would like to suggest for a future Case Challenge, please email us at [email protected] with the subject line “Case Challenge Suggestion.” We look forward to hearing from you.
Background and Presentation
A 1-year-old boy presents to the pediatrician with his parents reporting frequent infections, bruising, and decreased activity. Past medical and family history are unremarkable. He has taken no medications, and his vaccinations are up to date. The parents report no known…