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Physician FAQ

What is Phototherapy?

Phototherapy is the use of specific wavelengths of light that have been shown to be very effective in the treatment of psoriasis.  This light occurs naturally as a component of sunlight and is called ultraviolet light.

What is UV Light?

Phototherapy, or ultraviolet light, is defined as either mid wave light energy (Ultraviolet-B light [UVB]) or long wave light (Ultraviolet-A [UVA]). UVB is available as narrowband or broadband. It has been known for many years that UVA, UVB, and narrowband UVB light - Ultraviolet phototherapy - slows abnormal growth of normal skin cells which is associated with psoriasis.  Narrow band (NB) UVB and PUVA are often used to start the repigmenting process for vitiligo.

What is Narrow Band UVB Light?

Narrow band UVB is light energy which is emitted in a narrow band portion of the UVB light range, 311 nm to 313 nm. UVB-NB has been shown to be the optimal part of the UV light spectrum which slows growth of psoriasis lesions.

Is Phototherapy Safe?

As we all know, virtually every treatment for any type of illness carries with it some level of risk. We know that excessive exposure to UV light over a long period of time may increase the chances of skin cancer. However, unlike oral, IV or IM medications, the safety of UV light therapy (ultraviolet phototherapy) has been studied for over 100 years.  Recent studies show that narrowband UVB lamps (UVB-NB) has virtually NO incidence of causing skin cancer and has minimal side effects*. UVB-NB is generally considered to be safe for children and lactating mothers.  Ultraviolet phototherapy has been shown to be an extremely effective treatment for controlling Psoriasis and Vitiligo.  National Biological requires a physician’s prescription (U.S. only) for all units to be certain that patients have remain under your strict guidance.  Plus, our ultraviolet phototherapy units to ensure this with numerous safety features including a controlled prescription timer, child-proof key lock switch and more.

Which Form Of Ultraviolet Light Is Best?

All of these light treatments are quite effective. However, UVA light must always be used with an oral or tropical drug named Methoxsalen. Consequently, treatment with UVA light requires very close supervision by the clinician. In most cases, it is preferable to use narrow band UVB (UVB-NB) light, since there is no need for systemic drugs like Methoxsalen and treatment times are short. Recent studies show that the use of UVB narrow band light (UVB-NB) results in faster responses and longer remissions than with UVB broadband. Using narrowband UVB, results are similar to a PUVA treatment without the adverse effects of the drug. Also, it is relatively easy to monitor and control treatment. Many practitioners have noted a significant reduction in psoriasis scaling after the first 3 to 6 treatments and improvement may be noted after 6 to 9 treatments. Repigmenting for vitiligo is a longer process. We also offer blue (visible) lights to treat acne.

How Does Phototherapy Compare With Other Forms Of Psoriasis Treatment?

ther forms of treatment require the use of very strong steroids, immunosuppressive drugs, other systemic drugs or over the counter topical medications. These alternatives, while heavily promoted by drug companies, are costly, not effective for long term use, and have the potential for serious side effects. Ultraviolet phototherapy has been recognized as safe, effective, and economical and has stood the test of time.

How does TRU-BLU blue light therapy work to treat acne?

TRU-BLU delivers narrowband (417nm) incoherent, scattered light.  It is neither a laser nor using UV light.  The blue light activates endogenous photosynthesizers, porophins, within P. acnes creating toxic bacteriocidal environment within pylosebaceous gland.  This inhibits the obstruction of the sebaceous follicle and formation of the acne lesions.  

How Often are Treatments Taken and How long Are Treatment Times?

This depends on the condition. For psoriasis, phototherapy treatments are given 3 to 5 times per week, with treatment times beginning at a few seconds and increasing to several minutes over time. For vitiligo, phototherapy sessions are 1-2 times per week for several months.  For acne, blue light treatments are given 1 to 2 times per week for 5-6 weeks.  Once clearing is achieved, some patients will require regular phototherapy maintenance whether others may need only periodic checkups.

At What Point Is Home Therapy A Viable Option?

If involvement is 10% or more of patient's body, ultraviolet phototherapy is the fastest, most effective treatment possible. There is minimal risk involved, and the patient can treat effectively at home. You will determine an effective schedule of home treatment and monitor the patient’s progress. All orders for our home therapy devices require a physician's prescription.

Is Home Phototherapy Expensive?

In most cases, no. Today many insurance carriers have recognized the value of a home phototherapy regimen under the guidance of a physician for the treatment of severe psoriasis. As a result, many insurance companies cover 80% or more of the cost of a home treatment device. National Biological accepts most major credit cards, and offers various payment options including extended terms. Plus, we offer FREE insurance claim assistance.

What are the Electrical Requirements?

Most clinical booths require 120/240V, but amperage draw varies. Our smaller units such as Hand/Foot IITM and Tru-Blu®
plug into standard 110V grounded electrical outlets and draw less than 3 Amps. Please refer to electrical specification on individual product webpage. All home phototherapy units from National Biological plug into standard household grounded electrical outlets. They require 110V and draw anywhere from 0.5 to 13 Amps.

How Long Do Lamps Last?

Under normal usage, the lamps have a useful life of three to five years. After that they will slowly lose power, so treatment times will increase two- or three-fold.  Our lamps carry a 90 day warranty, and we always have replacements in stock.

*Published reprints available upon request.  Please use our contact form.

Clinical UVA/UVB PhototherapyFoldalite®-32 - Houva II® - Houva III® - Hand/Foot IITM - TRU-BLU®
Phototherapy for home use: Panosol II® - Dermalight80® - Foldalite III® - DermaLume 2XTM