Allergic contact dermatitis to woods of the genus Dalbergia in musical instruments.

Background: The woods of trees of the genus Dalbergia are a frequent cause of allergic contact dermatitis.

Objectives: To describe the different patterns of symptoms and sensitisation to woods of the genus Dalbergia in four patients whose regular work is linked to music, either as performers (two patients) or instrument makers.

Results: The patients showed extensive cross-reactivity between the different Dalbergia woods.

Non-immediate hypersensitivity reactions to iomeprol: Diagnostic value of skin tests and cross-reactivity with other iodinated contrast media.

Background: Iodinated contrast media produce non-immediate hypersensitivity reactions (NIHR). The goal of this prospective study was to determine the utility of skin tests and the subsequent tolerance to negative skin-tested iodinated contrasts in patients with NIHR caused by iomeprol.

Methods: Prick and intradermal tests with iomeprol, iopamidol, iopromide, and iobitridol were performed in all patients.