Extensive genital and gluteal epitheliolyses caused by locoregional lichen ruber two years after primary treatment of vulvar cancer.

Background: Lichen ruber is a rare inflammatory mucocutaneous dermatosis with unknown etiology. Paraneoplastic manifestations of the disease are rare. Eruptions of lichen ruber subsequent to traumas such as surgery or radiotherapy are described as Köbner's phenomenon.

Successful treatment of perifolliculitis capitis abscedens et suffodiens with combined isotretinoin and dapsone.

Perifolliculitis capitis abscedens et suffodiens (PCAS) is a rare scalp disease of unknown etiology which is hard to treat. It is often accompanied by scarring alopecia, acne conglobata, and recurrent fluctuant abscesses. PCAS belongs to the family of acne inversa (hidradenitis suppurativa).

Generalized lichen ruber planus--induced by radiotherapy of the breast?

Background: Lichen ruber planus is an inflammatory, pruritic disease of the skin and mucous membranes, which can be either generalized or localized. The etiology is unknown.

Patients And Methods: A 56-year-old female was treated with standard local radiotherapy after breast-conserving surgery due to high-grade ductal carcinoma in situ (DCIS) of the breast.