This disease is characterized predominantly by elevated IgE, eosinophilia, severe eczematous dermatitis as early as the first month of life, recurrent skin abscesses without the typical inflammatory signs (warmth, erythema, or tenderness; “cold abscesses”), recurrent cyst-forming pneumonias, and chronic mucocutaneous candidiasis (CMC) (25, 26). This evidence concerns the gene IGHE and susceptibility to pneumonia measurement.