Post-vaccination aluminium granulomas in children.

Background: Persistent itching subcutaneous granulomas related to aluminium-containing vaccines are poorly recognised in health care. They are often associated with aluminium hypersensitivity.

Case Presentation: An intensely itching subcutaneous nodule appeared on the left thigh of a 17-month-old girl at the injection site for an aluminium adsorbed diphtheria-tetanus-pertussis-polio-HiB vaccine given at 3, 5 and 12 months.

[Contact allergy to henna tattoos].

Background: Tattoos with henna colours have become very popular and the prevalence of contact allergy seems to increase.

Material And Methods: This is a short review article based on our own clinical experience and literature identified through a search in PubMed with the words "henna", "paraphenylendiamin" and "allergic contact dermatitis." A case report is included.

Variability in patch test reactions--first report from the Norwegian Patch Test Registry.

Background: A nation-wide Norwegian Patch Test Registry (NOLAR) was established in 2005 as a collaboration between six dermatology departments. International, multi-centre studies have documented great variability in the frequency of positive patch test reactions, considered as mainly due to heterogeneity of test populations.

Objectives: To analyse the variability of positive test reactions by studying patch tests performed at the six collaborating departments, using standardized procedures.