How long does the ultraviolet phototherapy device irradiate once

How long does the ultraviolet phototherapy device irradiate once

Ultraviolet phototherapy has the advantages of good efficacy and minimal side effects for various chronic skin diseases such as psoriasis and vitiligo. Therefore, since 1988, it has gradually become a popular treatment method for skin diseases such as vitiligo and psoriasis.

Performance characteristics of ultraviolet phototherapy device:

• Small size

• Lightweight

• Low price

• Significant therapeutic effect

  
  

Many patients are unsure of the duration of exposure after purchasing a UV phototherapy device. Do patients often consult that longer UV exposure time is better? Can the ultraviolet phototherapy device be irradiated every day? The similar issue of how many times a phototherapy device is irradiated per day.Everyone should be aware that all treatments are a gradual process without any shortcuts. How long does the UV phototherapy device last for once? How does the phototherapy device illuminate? Let's learn about it together.

Usage method

1: Clean the affected area before exposure to light. 

Before the first use, carefully read the instructions. Patients with vitiligo need to clean the affected area before treatment, dry it, and then irradiate it. Patients with psoriasis/pityriasis rosea/eczema need to clean their skin flakes, which can be soaked in salt water for 15 minutes, dried, and then irradiated. (After cleaning, follow the doctor's advice to apply topical medication and then irradiate)

2: Preparation before exposure to light

UV goggles are required for exposure, and areas that do not require exposure should be covered with blackout cloth/opaque cotton cloth or sunscreen (SPF30 or above). After treatment, some moisturizer or ointment can be applied. 

3: Setting the irradiation time for UV treatment should be done every other day. 

For adults, the first irradiation time should be set to 30 seconds (for children, the first irradiation time should be set to 15 seconds). The next day, if the skin reacts slightly and turns red, it means that the irradiation time is just right; If the skin does not respond, it is necessary to increase the light exposure time, which can be increased by 10-15 seconds; If there is severe redness and pain, the irradiation time needs to be reduced by 30% to 50%.

4: Light rod away

It is recommended to expose the affected area to a distance of less than 3cm and maintain a fixed distance.