Contact Allergy to Neem Oil.

A case of allergic contact dermatitis from neem oil is presented. Neem oil (synonyms: Melia azadirachta seed oil [INCI name], nim oil, margosa oil) is a vegetable (fixed) oil obtained from the seed of the neem tree Azadirachta indica by cold pressing. Contact allergy to neem oil has been described previously in only 3 patients.

Severe kerion celsi due to Trichophyton mentagrophytes: a case report.

Unlabelled: We report on a 5-year-old girl with a severe kerion celsi, caused by Trichophyton mentagrophytes, probably acquired from a pet guinea pig. The lesions had started as small irritating squamous lesions that had been accurately diagnosed as skin infection, but had only been treated with local antifungal agents. The lesions progressed and developed into a kerion celsi that had to be treated with long-term systemic griseofulvin.

[Nickel allergy and orthodontics].

Nickel hypersensitivity is a common problem, especially among young females, with a prevalence of 5 to 10%, increasing to 30%. In comparison with the oral mucosa, skin is more sensitive to an allergic reaction. The oral mucosa is less sensitive to nickel due to the difference in anatomical structure and the presence of pellicle.

[Latex glove allergy in dental practice].

Skin reactions due to the use of latex examination gloves occur frequently in dental practice. They consist of immediate type I allergy to natural latex protein, type IV delayed hypersensitivity to rubber additives and irritant dermatitis. Type I allergy to latex protein can cause contact urticaria, angioedema, rhinoconjunctivitis and asthma in the dentist, the dental assistant and also in the patient.