Photodynamic Therapy (PDT), also called photochemical therapy involves three elements: oxygen, a photosensitizer, and light source. Firstly, a photosensitizer is applied and then activated by light of the appropriate wavelength and intensity. The activated photosensitizer will react with oxygen, resulting in a complex interplay of amino acid, fatty acid, nucleic acid, and create cytotoxicity to destroy the target tissue, which will ultimately result in lesion ablation while sparing the normal tissue.
1. The feeling of hotness will last for a period of time, and it should fade away after using a cold compress.
2. The patients should pay great attention to sun protection after PSD, staying indoors to avoid exposing the treated area to any sunlight or other forms of bright light is the best choice. They can go out after 48 hours taking essential sun protective measures.
1. PDT treat acne by reducing the amount of propionibacterium.
2. PDT can shrink sebaceous glands and inhibit sebum production, without damaging the normal tissues.
3. PDT can quickly stimulate the subcutaneous tissue to produce enzymatic reaction to induce the quick growing and self-repair of the skin to remove and fade scars.