Allergic contact dermatitis to preservatives.

In summary, a wide variety of skin care products contain preservatives. Patients who are allergic to one of these preservatives may have either localized or widespread dermatitis. Affected patients may find it difficult to avoid thimerosal without the help of the health care provider because the use of these allergens is so widespread.

Sweet syndrome (acute febrile neutrophilic dermatosis) associated with pulmonary coccidioidomycosis.

Background: Sweet syndrome (acute febrile neutrophilic dermatosis) may arise in association with a variety of underlying systemic diseases. Only 1 case of coccidioidomycosis-associated Sweet syndrome has previously been reported.

Observations: We describe 2 patients who developed Sweet syndrome during the onset of acute pulmonary coccidioidomycosis.

Contact dermatitis to cosmetics, fragrances, and botanicals.

Cosmetics, fragrances, and botanicals are important causes of allergic contact dermatitis. Identifying and avoiding the causative allergens can pose a challenge to both the patient and the dermatologist. The site of involvement can give the investigator clues to the cause of the eruption in many cases.