2. The effective time of patients with vitiligo after phototherapy varies from person to person, which is related to their skin sensitivity, white spots and treatment frequency. Generally speaking, the head, face and trunk will work faster than the limbs. Some patients' skin will turn red after exposure, and then slowly, bit by bit and evenly return to normal skin color; Some patients may not respond at the initial stage of radiotherapy. Later, with the increase of dose, some pigment spots can be seen in hair follicles, forming pigment islands. What is the pigment island of vitiligo? Click to learn about the consultation!
In addition, the phototherapy of vitiligo needs to be adhered to, and it can not be recovered simply by taking a few spots. Only by insisting on the course of treatment can the effect gradually appear. In the course of treatment, there are also a few patients with erythema, blisters and itching after skin exposure due to poor skin tolerance. At this time, it means that the dose of phototherapy may be too large. At this time, we should stop phototherapy, listen to the nursing advice of medical staff, and then adjust the dose to continue treatment until the symptoms improve. Don't worry too much about this situation, it's normal.
4. There are many methods of phototherapy, which don't need too much comparison equipment. There is no best and highest level, only whether it suits you. Patients should be more rational when choosing, consider their own physical condition, listen to doctors' scientific advice, and blindly copy other people's clinical treatment experience, which may easily lead to "over-medical treatment". Correct choice of diagnosis and treatment methods suitable for your condition. How to choose the correct diagnosis and treatment method? Click to understand! Phototherapy is an important and effective means to treat vitiligo. Many patients with vitiligo want to try this method to treat their vitiligo. Many patients can't wait to shine every day, and want the white spots to disappear quickly? So, are you eager to try phototherapy at this time? Don't worry, phototherapy is good, but there are still some things to remind you when phototherapy. I hope the white friends had better understand and pay attention to these rules before taking the light.
Many white friends who have been exposed to light think that phototherapy is so effective, it must be that the higher the exposure dose and the more times, the better the curative effect and the faster the recovery. In fact, this is a wrong cognition. The minimum dose of erythema (the minimum dose that can cause leukoplakia reaction) should be measured during phototherapy. Generally, the initial dose is 70% of the minimum dose of erythema, and then the irradiation dose should be gradually increased according to the reaction of the lesion area. There is a simple method to help Baiyou judge whether the irradiation dose is appropriate: if the skin at the white spot appears slightly pink after phototherapy, it can disappear by itself after 24~48 hours, then this dose is appropriate. If the leukoplakia does not produce any reaction, the dose can be appropriately increased by 10~20%. If redness, itching and even blisters appear after irradiation, and the erythema can't disappear for more than 2 days, it means that the light dose is too large. At this time, we should stop phototherapy and take local symptomatic treatment. You need to wait until the erythema subsides and reduce the dose before starting phototherapy again. Usually, the common adverse reactions after phototherapy include pigmentation, skin erythema and blisters caused by excessive light dose, which can be quickly relieved after symptomatic treatment. In addition, the irradiation treatment of vitiligo does not need daily irradiation, and usually the frequency of 1~3 times per week is enough. If the interval of phototherapy exceeds 2 weeks for various reasons, the low dose should be reduced under the guidance of a professional doctor, otherwise it will easily cause blisters. On the other hand, some patients have obvious effects at the initial stage of exposure. Later, after exposure, there was only erythema reaction at the white spot, and the pigment did not increase at all. This is because phototherapy has entered a tolerance period, in other words, temporary fatigue has not worked. What should I do at this time? Then, we can stop phototherapy for about 3 months, then start to shine, and then phototherapy will work again. In addition, during phototherapy, there are the following precautions that need special attention from Bai You:
1. Attention should be paid to protecting eyes and genitals during phototherapy, and special protective glasses must be worn. Full-body phototherapy recommends thick underwear. Some patients are very troublesome, just closing their eyes is not enough. Wearing professional protective glasses can effectively prevent eye injuries such as cataracts caused by long-term ultraviolet radiation. Just as people choose to wear sunglasses to protect their eyes when ultraviolet rays are strong in hot summer. It's a truth to avoid overexposure with an umbrella.
2. Try to protect the normal skin around you during phototherapy. White friends who have been exposed to light will know that normal skin will obviously turn black after phototherapy, and the skin looks more "black and white" than before treatment. This is because the number and function of melanocytes in normal skin are normal, and more melanin will be produced after being irradiated by ultraviolet rays, just like the skin is tanned in summer. There is a simple way to solve this problem. You can cover normal skin with waste dark colors and only take photos of white spots. Try not to eat photosensitive vegetables such as figs and celery during phototherapy, and do not take photosensitive drugs such as tetracycline, promethazine, hibernating spirit and norethindrone, so as not to cause photosensitivity and phototoxic reaction.
4. Pay attention to moisturizing during phototherapy. Many friends of phototherapy, especially patients with whole body phototherapy, will feel dry and desquamation after phototherapy, especially in winter when the air is dry and cold. Dry skin is a common adverse reaction of phototherapy. It is suggested that friends of phototherapy should not take a bath with hot water or rub it. You can use a whole body moisturizer to relieve the symptoms of dryness.
5. It is recommended not to use external medicine (NBUVB or 308nm excimer laser) before phototherapy, because external medicine applied to the skin may block the light and affect the curative effect. The spectrum of sunlight is different from that of ultraviolet phototherapy instrument. The spectrum of ultraviolet phototherapy is narrow-band ultraviolet, and the peak value is about 3 1 1nm, which is the best wave band for treating vitiligo. The spectrum in sunlight is complex, and some light waves may even induce and aggravate vitiligo.
Question 2: Are there any side effects of phototherapy?
The imported 308 laser has no toxic side effects, and is especially suitable for children, pregnant women and sensitive parts such as eyelids and genitals. Occasionally, due to the increase of energy, slight blisters and slight burning sensation are caused, and some patients may feel a little pain in the affected area within a few hours after treatment.