[Photodynamic therapy: new indications].

Photodynamic therapy (PDT) is approved for the treatment of actinic keratoses, superficial and nodular basal cell carcinomas, and recently, Bowen's disease. In the last decade the advances experienced in the study of the photodynamic reaction have expanded the spectrum of application to other cutaneous diseases, neoplastic as well as inflammatory and infectious ones. The experience in psoriasis, acne, common warts and cutaneous T cell lymphoma starts to be broad and interesting, which permits to define its use in these entities. Photodynamic therapy is also been tested for a great variety of dermatoses with different photosensitizers and light sources with variable results. In this paper we review the treatment of Bowen's disease and other indications different from non melanoma skin cancer with PDT, providing our experience.