Local (topic) Photodynamic Therapy
The most important sensitizer in dermatology is 5-ALA (5-Aminolaevulinic Acid):
- It is accumulated specifically in tumor cells
- Penetration depth only 2 mm
- It is used in treatment of actinic keratosis, basalioma, severe acne, warts, herpes, ucers (diabetes), psoriasis and newly also in cosmetics (photoablation for skin regeneration)