title: Idiopathic CD4+ lymphocyte deficiency. Report of an unusual case associated with atopic dermatitis and allergic contact dermatitis and review of the literature.
abstract: BACKGROUND
  Idiopathic CD4+ lymphocyte deficiency is a newly described entity of apparently non-human immunodeficiency virus-associated helper T-cell depletion. The clinical spectrum continues to evolve, but, to date, it has included patients ranging from those with minimal symptoms to those who have died with acute opportunistic infections. Several individual cases have been previously reported, many with distinctive, primarily infectious, cutaneous manifestations.
  
  
  METHODS
  We describe a patient with idiopathic CD4+ lymphocyte deficiency distinguished by a unique clinical presentation of atopic dermatitis exacerbated by contact urticaria and allergic contact dermatitis. She has a persistent markedly diminished CD4+ lymphocyte count (absolute count less than 50), no serologic evidence of, or risk factors for, human immunodeficiency virus infection, and no history of opportunistic infections.
  
  
  CONCLUSIONS
  We present a possible new cutaneous manifestation of idiopathic CD4+ lymphocyte disease and summarize the previously reported cases, with an emphasis on the cutaneous features.
authors.affiliation: Department of Dermatology, Yale University School of Medicine, New Haven, CT 06510.
authors.forename: A L
authors.initials: AL
authors.lastname: Goodrich
authors.forename: R E
authors.initials: RE
authors.lastname: Tigelaar
authors.forename: K L
authors.initials: KL
authors.lastname: Watsky
authors.forename: P W
authors.initials: PW
authors.lastname: Heald
mesh_terms: D000328:Adult; D015496:CD4-Positive T-Lymphocytes; D017449:Dermatitis, Allergic Contact / Q000209:etiology*; D003876:Dermatitis, Atopic / Q000209:etiology*; D005260:Female; D006801:Humans; D008231:Lymphopenia / Q000150:complications*