Immune System Disorders

A 3-year-old boy with no past medical history presented to the emergency department for worsening cough, decreased appetite, tachypnea, and chest pain for 2 nights.

Hemophagocytic lymphohistiocytosis results from an unsuppressed immune response leading to hypercytokinemia (cytokine storm), which mimics sepsis.

A 31-year-old man presented to the emergency department (ED) with a chief concern of fevers and diarrhea for 3 weeks.

A 2-year-old previously healthy girl presented to the pediatric dermatology clinic with recalcitrant diaper dermatitis for 6 months despite treatment with topical antifungals and topical antibacterials. ...