Commen questions for vitiligo patients during UVB treatment

Title: Frequently Asked Questions about UV Light Therapy for Vitiligo Patients

Introduction:

UV light therapy is a common treatment for vitiligo patients. However, patients often have concerns and questions about the therapy. In this article, we will address some of the most common questions and provide helpful information for patients. Please note that this article provides a general overview and it is recommended to consult with a local phototherapy specialist for personalized advice.

1. What is the difference between sun exposure and UV light therapy for vitiligo patients?

Answer: The spectrum of UV light therapy devices is different from sunlight. UV light therapy uses narrowband UVB light with a peak wavelength around 311nm, which is the most effective wavelength for treating vitiligo. Sunlight, on the other hand, has a complex spectrum that may contain wavelengths that can trigger or worsen vitiligo.

2. What is the initial dosage for vitiligo light therapy?

Answer: It is recommended to start with a low dosage for vitiligo light therapy. The initial exposure time should be 15 seconds. If there is no redness or burning sensation on the skin the next day, the exposure time can be increased by 5-15 seconds for the next session. Following this process, increase the exposure time by 5-15 seconds for each session until the skin develops a mild pinkish redness. Maintain this dosage and perform the therapy every other day. The desired effect is the appearance of mild redness, so it is important not to increase the dosage blindly.

3. Can UV light therapy be performed daily? Will it increase side effects?

Answer: Research has shown that UV therapy has a direct cytotoxic effect on T cells infiltrating the skin lesions. T cells are usually cleared within 48 hours. Therefore, it is recommended to perform the therapy every other day. Many clinical studies have also suggested that three sessions per week provide optimal results. Increasing the frequency of therapy does not enhance the effectiveness but may increase the occurrence of side effects such as redness and blisters.

4. Should the next session of light therapy be delayed until the skin redness subsides?

Answer: The time it takes for redness to subside after light therapy should be observed. If the redness disappears within 24 hours, the next session can be increased by 10% of the previous exposure time. If the redness subsides between 24 to 48 hours, it indicates that the exposure time was appropriate. In this case, the next session can be performed with the same exposure time. If severe redness occurs after light therapy, it indicates that the exposure time was too long. In this case, the next session should be performed with half of the previous exposure time after the redness subsides.

5. Are the treatment methods and dosages for vitiligo in children the same as for adults? At what age can adult dosages be used?

Answer: Due to the delicate nature of children's skin (above 3 years old), the initial exposure time should be halved compared to adults. For example, if the initial exposure time for adults is 30 seconds, children should start with 15 seconds. Generally, children above 12 years old can use the same dosage as adults.

6. How long does it take to see results from vitiligo light therapy?

Answer: The speed at which light therapy shows results varies from person to person. Some patients may see improvement within one month, while others may require around six months for noticeable effects. According to the latest international phototherapy guidelines, it is recommended to continue treatment for 48-72 sessions, which is equivalent to 3-6 months, before determining the effectiveness of light therapy for each individual.

Conclusion:

UV light therapy is an important treatment option for vitiligo patients. In this article, we have addressed some of the most common questions and concerns regarding the therapy. However, it is important to consult with a local phototherapy specialist for personalized advice and to address any specific concerns. We wish all patients a speedy recovery!