title: [Interpretation and relevance of patch testing: false-positive and false-negative test reactions, compound allergy, cross-sensitivity].
abstract: This chapter reviews pitfalls and mistakes in patch testing. Most sources of false-positive and false-negative reactions are indicated and analysed. Cross-sensitivity among allergens is discussed and compound allergy is debated. Keys for establishing relevance are indicated, for a better reading and interpretation of patch testing by practitioners (trainees or experienced dermatologists).
authors.affiliation: Cabinet de dermatologie, 19, rue de l'Observatoire, 67000 Strasbourg, France. christophe.lecoz@wanadoo.fr
authors.forename: C J
authors.initials: CJ
authors.lastname: Le Coz
authors.forename: D
authors.initials: D
authors.lastname: Sasseville
mesh_terms: D003429:Cross Reactions; D017449:Dermatitis, Allergic Contact / Q000175:diagnosis; D005188:False Negative Reactions; D005189:False Positive Reactions; D006801:Humans; D010328:Patch Tests