Photodynamic is the latest technology for the treatment of acne originating from Europe and the United States. It is a new technology that uses photodynamic reactions for disease diagnosis and treatment based on the interaction of light, photosensitizers and oxygen. Photodynamic therapy for acne mainly works through four main aspects of the acneogenesis mechanism.
The mechanism of action of photodynamic therapy for acne.
1. Photodynamic therapy directly kills Propionibacterium acnes, Staphylococcus epidermidis and Malassezia;
2. Photodynamic therapy directly damages sebaceous glands, reduces the number of sebaceous glands, inhibits sebum production, and has a good oil control effect;
3.Photodynamic has strong anti-inflammatory and immune regulating effects;
4. By acting on the keratin-forming zoo to reduce hair follicle obstruction and promote the orderly arrangement of fibroblasts to reduce the formation of acne pits, it can significantly restore the normal appearance of the skin and even make the skin more lustrous, achieving a more satisfactory clinical effect.
What are the precautions for photodynamic acne treatment.
1. Slight itching, burning sensation and pins and needles may occur during treatment, which are normal reactions.
If the pain and burning sensation are severe and unbearable, please inform the doctor in time for individualized treatment adjustment and improvement (adjusting the time and intensity of light exposure), or use a local cooling device or numbing medicine to relieve pain.
After treatment, the following reactions may occur.
(1) Facial edema erythema: the most serious on the first day after treatment, generally about 3 days can be self-relieved, during this period need local cold compress or cold spray to reduce facial edema type erythema phenomenon;
(2) Dry skin: can be relieved by itself, and can be relieved by applying cold compresses or topical moisturizers to the affected area to relieve local dry skin;
(3) Local crusting and flaking: can be relieved by itself, and can be relieved by cold compresses or topical moisturizers on the affected area to relieve local skin dryness;
(4) Temporary hyperpigmentation: some patients will have temporary hyperpigmentation after treatment, generally without treatment, 1-3 months can be self-relieved. Of course, it is very important to avoid light after treatment. When you go out, you need to apply sunscreen and wear a sun hat to avoid aggravating the occurrence of hyperpigmentation;
(5) A very small number of patients may develop reactive acne after receiving photodynamic therapy, i.e., a transient aggravation of acne, often occurring around the mouth, which can generally be completely relieved in about ten days to a month without special treatment and without scarring. After the onset of reactive acne, the results will be even better if treatment is continued. When more serious reactive acne occurs, such as large new acne, pustules, or even oozing and crusting, there is no need to panic (this is one of the normal reactions after photodynamic therapy). At this time, it is necessary to strengthen the wet compress on the affected area and avoid scratching the affected area to avoid secondary infection.
Daily protective measures after treatment.
(1) After photodynamic therapy, we should especially moisturize the facial skin and apply cold compresses, which can significantly alleviate a series of adverse reactions such as dryness and redness.
(2) Pay attention to sun protection from light, especially within 48 hours after the end of the treatment.
(3) If you have any discomfort, please seek medical attention promptly.
Points for daily attention during treatment.
(1) During the treatment period, smoking and alcohol should be prohibited, pay attention to the combination of work and rest, avoid spicy and stimulating diet, and maintain a good mood.
(2) Avoid foods high in sugar and fat, eat a light diet, and eat more fresh fruits and vegetables; work and rest regularly and get enough sleep.