Photodynamic therapy (PDT) is a treatment method that combines the use of special photosensitizers and a light source to destroy tumor cells or other pathologically altered tissues. The PDT procedure involves injecting a photosensitizer into the patient's body, which accumulates in the tumor or other pathologically altered tissues. Then, after a certain period of time, the area is illuminated with special light of a specific wavelength, what activates the photosensitizer and causes a reaction that leads to the destruction of tumor cells or other pathologically altered tissues. PDT can be used to treat various types of cancer, such as skin cancer, cervical cancer, prostate cancer, and others. It can also be used to treat some dermatological diseases, such as acne or rosacea. The advantages of PDT include minimal damage to the surrounding healthy tissues, the absence of systemic side effects and the possibility of reapplying the procedure. However, like any treatment method, PDT has its own limitations, which can be discussed with a doctor before conducting the procedure. Photodynamic therapy (PDT) can be used to treat various diseases and conditions, including: 1. Skin cancer: PDT can be an effective treatment method for some types of skin cancer, such as basal cell carcinoma and squamous cell carcinoma. 2. Acne: PDT can help in the fight against acne, Reducing inflammation and the amount of acne-causing bacteria on the skin. 3. Rosacea: PDT may help reduce inflammation and redness associated with rosacea. 4. Porphyria: PDT can be used to treat porphyria, a group of rare genetic disorders that affect the synthesis of hemoglobin. 5. Macular Degeneration: PDT can be applied to treat certain forms of macular degeneration, which is one of the main causes of vision loss in older adults. 6. Laryngeal papillomatosis: PDT can be used to treat tumors and laryngeal papillomatosis, which may cause breathing difficulties and voice problems. 7. Gynecological diseases: PDT can be used to treat some gynecological diseases such as cervical dysplasia or vaginal infections. 8. Stomach diseases: erosions, gastritis, ulcers. 9. Psoriasis treatment: used successfully by dermatologists in treating skin in psoriasis. However, Before using photodynamic therapy, it is necessary to consult a doctor to determine if this is a suitable treatment method for the specific case.