Allergic contact dermatitis is a common skin condition that results in an itchy and weeping rash, typically a few days after direct skin contact. Common causes include nickel, chemicals, plants, cosmetics, perfumes and ointments.
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Allergic contact dermatitis is a common skin condition that results in an itchy and weeping rash, typically a few days after direct skin contact. Common causes include nickel, chemicals, plants, cosmetics, perfumes and ointments.
Allergic Contact Dermatitis is common
Allergic contact dermatitis is a common skin condition which causes an itchy and weeping rash localised to the area in contact with the allergic trigger (allergen). It usually develops two or more days after contact with the allergen. It lasts as long as contact continues and for a short time (typically 1 to 2 weeks) afterwards.
Nickel metal is the most common cause of allergic contact dermatitis
Approximately 8% of the population is allergic to nickel and the prevalence is higher among females than males. Nickel may be found in the metal of costume jewellery, watchstraps, bra clips and jeans studs. The ears are often affected by wearing of non-gold earrings. The usual precipitant is piercing of the ears. Two days after contact with the metal, an itchy rash develops which may blister and weep. This rash will continue for several days or longer, if further contact with the metal continues.
Plants may also cause allergic contact dermatitis
Some plants can trigger allergic contact dermatitis. Rashes often appea