Photodynamic therapy is the latest technology for acne treatment 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.
I. The mechanism of action of photodynamic therapy for acne
1. Photodynamic therapy directly kills Propionibacterium acnes, Staphylococcus epidermidis and Malassezia.
2. Photodynamic methods directly damage sebaceous glands, reduce the number of sebaceous glands, inhibit sebum production, and have good oil control effects.
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 subsequently 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.
If the pain or burning sensation is severe and unbearable, please inform the doctor in time for individualized treatment adjustment (adjustment of light time and light intensity), or use a local cooling device or numbing medicine to relieve pain. or numbing medicine to relieve pain.
Second, 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, can be relieved by cold compress on the affected area or local topical moisturizer to relieve local dry skin.
3.Local crusting and flaking: can be relieved by itself, and can be relieved by cold compress or local topical moisturizer on the affected area, avoid scratching the affected area to avoid secondary infection.
4, temporary hyperpigmentation: some patients will have temporary hyperpigmentation after treatment, generally without treatment, 1-3 months can be self-relieved. Of course, proper light avoidance is quite important after treatment. When going out, sunscreen and a sun hat should be applied to avoid aggravating the occurrence of hyperpigmentation.
5. Reactive acne: 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 leaving scars.
After the onset of reactive acne, the results will be even better if the 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).
Third, the daily protective measures after treatment.
1, after photodynamic therapy to special facial skin moisturizing and cold compresses, can significantly alleviate the dryness and redness and a series of adverse reactions.
2, pay attention to the avoidance of light and sun protection, especially within 48 hours after the end of care.
3.If you have any discomfort, please seek medical attention in time.
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 high sugar, high-fat food, light diet, eat more fresh fruits and vegetables; regular work and rest, maintain adequate sleep.