A diagnostic pearl in allergic contact dermatitis to fragrances: the atomizer sign.

Allergic contact dermatitis (ACD) reactions to fragrances may present in a variety of ways because of exposure to these allergens from a wide range of sources. We describe a diagnostic pearl for this common ACD, primarily seen overlying the prominentia laryngea (Adam's apple) both in women and girls, which we have called the atomizer sign.