Berloque dermatitis is due to contact with
Berloque dermatitis By 5-methoxypsoralen (bergapten) in bergamot oil contained in perfumes. Term arose from the method of applying perfume to the sides of the neck and upper chest in a pendant shape (berloque is French for pendant). Wavelengths of UV light above 320 nm and hot humid conditions our absorption. Deep-brown pigmentation follows the pattern formed by the trickle of the droplets of perfume over the skin from their points of application.
Eczema and related disorders
Metals
Cosmetics
Food
Plants
Cosmetics