Patients must be referred to the NIH with a diagnosis or a suspicion of Hyper IgE syndrome. Family members of probands and patients referred for other immune syndromes that demonstrate some of the characteristics of HIES may also be evaluated under this protocol. Male and female patients will be accepted. An inclusion age range will be constructed to accommodate at-risk infants born into affected families as well as to be able to examine the members of extended families. The extent of evaluation will be tailored to the patient s needs, age, and conditions. The cutaneous manifestations of HIE are often present at birth and need management from that time on.